Joe Biden's foreign policy record:
Opposed Reagan's defense buildup
Proclaimed the fall of the Shah was a step forward for human rights in Iran
Voted against the 1991 Gulf War
Voted for the 2003 Gulf War
Opposed 2007 Iraq War "Surge"
Opposed authorizing Navy SEALs to take out bin Laden
Tom Cotton's foreign policy record:
Authored a partisan letter to Iran's leadership in an effort to a) do a little political grandstanding and b) undermine what he believes is a catastrophic nuclear deal that will lead to a nuclear-armed theocratic dictatorship whose authority is derived from the doctrine that because the twelfth imam went into hiding in the 9th century, a supreme leader must exercise his authority until he returns to kill all infidels.
What will prompt his return? Some say, a good ol' fashioned nuclear holocaust.