What the HECK happened to Delores!? She was in Lethal Weapon 3 at the beginning, showed up again breifly later, and then she was dropped from the story line all together. What happened?
She had nothing to do with the story whatsoever, other than the possibility of creating wacky misunderstandings or some sort of comic relief that Leo would be there for anyway. And considering Murtaugh was stuck in a Heroic BSOD, followed by an enraged He's Back, there was absolutely no way she'd fit without being anticlimatic and a tired gag.
In the first film, how did Murtaugh know where to find General McAllister at the end? It looked like he just wandered into the right alley.
It was the alley outside the club McAllister held them hostage. Murtaugh was looking for him but it was a lucky coincidence that he fled at that point, at that time.
At the end of the first film, Mr. Joshua drives up to Murtaugh's house to get revenge. As he does so, he kills two police officers who were sitting outside watching Murtaugh's house. When Mr. Joshua goes inside, he sees a note that reveals Murtaugh and Riggs were expecting him at the house. So....why the hell didn't they warn those two patrolmen sitting in their car??
Isn't that the reason the patrolmen were there?
Considering Joshua was less direct and more circumspect, they were probably expecting him to sneak into the house. In addition, if he didn't see police out front, he would have realized something was up. No one likely expected him to walk up to two armed police officers and kill them.
So Lorna survives getting shot with Hollywood "cop killer" bullets by putting on two ballistic vests, even though they just easily punched through a solid steel bulldozer blade? That makes no sense even if you forgot that earlier in the movie, Riggs demonstrated the ammunition by shooting clean through a free-hanging vest. In case you're not following, that's two layers it went through in that scene, yet the same two layers somehow stopped the bullets cold at the end. Wait, what?
On top of that, she has offered evidence (in the form of various scars) that she's just as reckless as Riggs; she isn't the type to wear even one ballistic vest, never mind two. Even if she were, how would she manage to stand up, much less participate in a gunfight? Just one of those would be pretty freakin' heavy.
We don't get a good view of the vests she wearing, it's possible she had a trauma plate in one of them, and that's what stopped the bullet. And bulletproof vests are pretty heavy, but the real problem is the bulk: vests are about two inches thick. Putting on two of them would make her look like a blimp.
Bearing in mind the dismaying level of gun-related ignorance on display across the entire series, it's unlikely the writer knew trauma plates were even a thing, let alone made sure a character used one without demonstrating it in-story.
I'm genuinely curious about the legal aftermath of the second film. While there were oodles and oodles of evidence against Rudd and his cronies (especially when they started killing off police officers) there surely had to be some sort of Internal Affairs or even Department of State investigation at the end to clear Riggs and Murtaugh of any culpability. I'm particularly interested in the kind of defense that could apply: they didn't have any warrants for searching/destroying Rudd's property, much less arresting, let alone killing his staff (not all of their kills were in self-defense.) In fact, much of the property they destroyed wasn't even Rudd's, it was the sovereign domain of the South African government. It gets worse when you remember that they had BOTH left their badges behind in order to indulge in acts of revenge, outside the auspice (and legal procedure) of the LAPD. Would they be reprimanded? Suspended temporarily? Demoted?
They would be investigated and likely reprimanded. While they didn't have their badges with them, they were still police officers (a cop is still a cop unless he's put on leave and told to turn in his badge), and they had previously identified themselves to the bad guys as cops, so the argument would be that they were pursuing an investigation into the money case, found Leo was being held in custody and in imminent danger of death (which they already knew but that's beside the point), and improvised because they were unable to wait for backup. Everything that happened on the ship was then in self-defense, since they were captured and in mortal danger. They would likely be reprimanded for going in without backup, but since they were really the only survivors they could spin in however they wanted (though knowing them, they'd probably tell the truth).
As for diplomatic fallout, given that the South Africans were clearly abusing their immunity, the South African government would likely try to sweep the whole thing under the carpet.
Since any complaints the South African government might raise about Riggs and Murtagh's conduct would be rapidly countered with the plentiful evidence that South African diplomats were engaged in the far more serious acts of smuggling drugs into the United States and kidnapping and murdering local police officers and citizens, and since the United States government is going to be less than thrilled with the South African government over that to begin with, the South African government doesn't exactly have much of a leg to stand on. It's practically guaranteed that the South African government wouldn't kick up that much of a stink in case they make things worse for themselves. Most likely, they offered a lot of profound regrets and apologies, took their lumps and, like the troper above said, just waited for the whole mess to go away as quickly as possible.
Diplomatic Immunityisn't. The theory behind immunity is based on the fact that sovereigns don't subject each other to the laws of their own countries, and this extends to the body of the ambassadors that each country may send while that ambassador is doing that country's diplomatic or policy work. This is why UN diplomats should technically pay their New York Parking tickets - infringing New York Traffic laws are almost never the goals or work of an outside sovereign nation. Cop killing and drug smuggling is *not* the Republic of South Africa's international diplomatic policy - Rudd wouldn't be covered, even if he was the ambassador (and if he's just a random functionary within the embassy, that's even worse- they're not covered at all). Further, nations may declare any of their ambassadors persona non grata which means that they're withdrawing their immunity. The Republic of FW De Klerk would have probably signed that order in a heartbeat in the face of evidence of Rudd's atrocities.
What happened to the big shipment of heroin that McAllister was expecting during the first movie? The people who were going to pick it up are all dead, but depending on how it was coming in, it might not have been possible for the delivery men to turn around and take it back to Asia.
They probably would have notified Customs or had other LAPD officers do a search and seizure. It's safe to assume that heroin didn't make it to the streets, given the fact that they took out the entire distribution network.
But they don't don't anything about the shipment that was coming in other than the fact that it's due in the next few days. They don't know who's delivering it, how it's being delivered, or where it's coming in.