'US angry that Iran defended itself against spy drone' (VIDEO)

Barack Obama's second term is only just beginning - and he's already making bold steps in the international arena.The U.S. has sent an air force detachment to service warplanes in Poland, which had pressed Washington for a security guarantee against Russia.

U.S. lawmakers are also reportedly preparing new sweeping sanctions against Iran, targeting its foreign business transactions. That's on top of the latest round of restrictions imposed by Barack Obama just after he was re-elected to the White House.

Strains are widening between America and Iran - after The Pentagon revealed that Iranian jets fired at a U.S. drone flying off Iran's coast last week. Political analyst Mohammad Marandi says it's unlikely Tehran will bow down to Western pressure.