US Ambassador to the United Nations Samantha Power affirmed America's commitment to Israel on Sunday during a speech at the AIPAC annual policy conference. 'There will never be a sunset on America's commitment to Israel's security,' Power vowed, adding that, 'The US will not allow Iran to obtain a nuclear weapon. Period.' Power said that there was an alarming surge in global anti-Semitism in recent years. Criticism of Israel is never a justification for incitement to violence, she stated. Power said that the US was committed to fighting against this anti-Semitism.