Wrong on all counts.
It is NOT their land. FOREIGNERS, not Iraqis set the explosives.
The mosque is not being attacked by the USA, but by Iraqi security forces. USA forces will NOT be involved.
Finally, the government of Iraq is in charge. It has shown its independence and criticism of the the USA quite a few times in the short time of its existence.
Like any country, Iraq must have civil order. Those violating such order must be restrained. No country can survive with private armies running around all over the place and challenging the national government.