Watch: President Biden delivers remarks to the United Nations | USA TODAY

President Joe Biden will try to rally other nations behind Ukraine in a speech at the United Nations on Wednesday that comes as Russia is rebuilding its military. Biden is also speaking days after he angered China by once again promising to come to Taiwan's aid if China attacks the self-governing island.

Biden’s international stature has been enhanced since his inaugural United Nations address last year, delivered soon after the U.S.’s chaotic withdrawal from Afghanistan. But despite the praise he's received for building a coalition of support for Ukraine, he still faces a mountain of international problems – including trying to keep the pressure on Russia as its war against its neighbor grinds on and Europe prepares to survive a winter without Russian gas.