Ahmadinejad certainly is constant, according to the Washington Post:
The presidents of Iran and Syria on Thursday ridiculed U.S. policy in the region and pledged to create a Middle East "without Zionists," combining a slap at recent U.S. overtures and a threat to Israel with an endorsement of one of the region's defining alliances. . .So, given an inflexible Iran, the Administration hoped to change -- by backing down. Only recently, Obama advocated tougher sanctions in 2010 if diplomacy stalled, seconded by Secretary of State Clinton's threatened "crippling sanctions." Yet, the same day Ahmadinejad mocked America and threatened Israel, the State Department downgraded to sanctions-lite.
Ahmadinejad, a Holocaust denier, spoke of Israel's eventual "demise and annihilation" and said the countries of the region could create a future "without Zionists and without colonialists."
Which shows that Ahmadinejad understands Obama better than fawning progressives.