Yes I agree partly with your suggestion ; "The proper place to add this statement is at Status of territories captured by Israel#Occupied or Israeli-occupied territories#Applicability of the term "occupied" or International law and the Arab–Israeli conflict#Legal issues related to occupation, any of the multiple articles dedicated to discussion of the alleged occupation." 

 Regarding the alleged occupation which you mention, I would say it is very clear that this is no allegation but rather, it is a statement of fact that Israel has occupied said territories. This is a Fact because it has been asserted as such by so many reliable sources, and not to mention bodies such as the UN, and amnesty internation . The territories are occupied, this is a fact and once in the article it will read as a statement of fact because we have WP:RS compliant sources which stipulate such.  

 Tibet  is not under occupation, never mind a military one. It is part of PRC which no country disputes.  

 Going back to the issue of where to put the statement, yes I agree , we should place it in the above mentioned articles but most important of all, it needs to be placed in this page first. My proposed wording for inclusion in the lead is in the second paragraph; 

 Israel has since fought several wars with neighboring Arab states, in the course of which it has occupied the West Bank, Sinai Peninsula (1956–57, 1967–82), part of South Lebanon (1982–2000), Gaza Strip and the Golan Heights. Israel's continued occupation of Gaza, the West Bank and East Jerusalem is the longest military occupation in modern times. It has extended its laws to the Golan Heights and East Jerusalem, but not the west Bank. Israel has signed peace treaties with Egypt and with Jordan, but efforts to resolve the Israeli–Palestinian conflict have so far not resulted in peace. 

 As this is the lead and the statement to be included is a statement of fact, no Fringe views should go into this paragraph or anywhere else on this article for that matter. It would be akin to mentioning flat earth societies on the [Earth] page. I welcome any policy based objections otherwise we should move to incorporate this in the main article after someone copy edits it. The word occupation is said twice in the sentence and I could not figure out a way to make it single whilst maintaining its meaning. Any help would be appreciated.