The question is general, but the obvious context is the fact that Gaza is governed (and presumably, if not for US/Israel support to Fatah, entire Palestinian territory would be governed) by Hamas, whose official goal is destruction of Israel (e.g. see  and  and ).
The UN seems strongly in favor of granting Palestine the statehood - and when that happens, it would be a UN member state whose official goal is destruction of Israel.
Is there anything in UN charter or laws prohibiting a country to seek a destruction of another country?
If there is, what specifically are the measures within UN's power to counteract such a situation? Strongly worded statement? Exclusion from UN? Nothing?