WASHINGTON -- On foreign policy, President Obama effectively posted a sign on the White House lawn last summer that said: Come back after Election Day. Now, the moment has arrived and the world's problems are lining up for Obama's attention. To manage the global problems coming at him, Obama will have to make decisions of the sort he sometimes deferred during his first term. The time is over for the cautious (if often sensible) approach that was dubbed "leading from behind." Here's a look at some urgent global issues intruding on the Obama victory party: -- China is...

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