According to Biden, Obama has a “backbone like a ramrod.”

Via Fox News:

President Obama is using the final day of the G-20 summit to build support for a U.S. military strike in Syria, even as the details of that plan continue to change by the day — with one source telling Fox News that military officials have been asked to revise their plans 50 times since the Pentagon first began considering a “limited” action.

Obama, who arrived in Russia on Thursday to find the already failing relations with his host Vladimir Putin in even worse condition, ran into opposition from China and the European Union over a potential U.S. strike on Syria — one of Russia’s closest Mideast allies.

The president’s push for action on the international stage came as the Pentagon continued to plan possible methods of attack. While missile-equipped ships are at the ready in the Mediterranean Sea, a senior defense official told Fox News that the possibility of launching military aircraft strikes was one of the range of options presented to Obama.

The official said the choice the president makes will depend on what he wants included in the target list – and that seems to shift daily. The regularly fluctuating plans could feed into congressional uncertainty as members prepare to consider a draft resolution next week authorizing military action there.