Difficult situations remain for President Obama in Syria, Afghanistan, Iran and Israel. NBC's Richard Engel discusses what Obama needs to do to overcome these challenges in his second term.By NBC News staff
Updated at 8:32 a.m. ET: LONDON -- World leaders from Mexico City to Beijing were quick to congratulate Barack Obama on his victory early Wednesday – but the re-elected president faces a slew of foreign policy challenges in his second term.
"I would like to congratulate re-elected President Barack Obama from the bottom of my heart," German Chancellor Angela Merkel told local television. "We know each other well and I am looking forward to our cooperation ... My heartfelt congratulations on this day today."
British Prime Minister David Cameron and Enrique Peña Nieto, president-elect of
Mexico, both posted goodwill messages on Twitter.
Warm congratulations to my friend @barackobama (https://twitter.com/barackobama). Look forward to continuing to work together.
— David Cameron (@David_Cameron) November 7, 2012 (https://twitter.com/David_Cameron/status/266059334893580289)
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