From the releasing of doves in Kabul, Afghanistan to a massive concert in Havana, people around the world are marking the special day.
Defeating the Taliban will become impossible without more soldiers, Gen. Stanley McChrystal said in a report made public Sunday, hours after President Obama repeated doubts about whether to send them.
Gov. Arnold Schwarzenegger is expected to call for a special legislative session to consider a new tax reform plan. But the overhaul faces skepticism.
Amid a blitz of public appearances, Obama touts government initiatives in education and energy as part of an economic strategy.
Foreign leaders will look for American leadership and effectiveness at a full schedule of events this week. On Tuesday, Obama will attend UN Secretary-General Ban Ki-moon's meeting on global warming.
McChrystal's battlefield assessment, leaked Sunday, says that the US will likely fail in Afghanistan if his mission doesn't get more resources.