@sunick, honestly, and with all due respect: please get some perspective!
Yes, the partition plan - specifically UNGA resolution 181 - indeed confirms the partition of Mandatory Palestine. This much is true!
But if you are going to ground your argument in "but this is legal, there is an UNGA resolution to that effect" - if you were to be intellectually honest - you'd also have to give the same weight to the following UNGA resolutions [among others] ...
... 303/6 & 2253 - on Jerusalem. ISR decided it didn't matter and unilaterally annexed East Jerusalem (but without giving its people citizenship)
... 2443 (and many thereafter): questioning Israel's human rights record opposite Palestinians. This is, from this point forward, sort of a "running gag" as in "keep on coming up and being voted in favour"
... 3246 - wherein the right to resistance to the occupation, explicitly including "armed resistance" is re-affirmed
... 3414, calling for sanctions and a military embargo until Israel ends the occupation
... [a plethora of resolutions, all calling out any number of things - including such not directly relating to Palestinians, such as nuclear disarmament - most of which Israel has ignored]
... come 2023/4: numerous overwhelming calls for a ceasefire!
Add to that a plethora of UNSC resolutions - including those vehemently opposing any and all of Israel's supposed "annexations" - and those were just the ones NOT vetoed by the US!
... so, if you are going to argue "but there is a UN resolution": please take into account all of the other UN resolutions, too!
Or, don't! I mean, as per the Netanyahu regime, the UN and all its organs are inherently antisemitic or something. Including the Secretary General. Fine, argue that! But then: stop citing the few (out of an estimated gazillion or so) resolutions that actually went in Israel's favour.