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Anthony Cordesman of the Center for Strategic and International Studies doubts Afghan security forces will be able to secure all that country. The U.S. and its allies may have to settle for "good enough," he says.

Defense Secretary Leon Panetta travels to Brussels this week to meet with NATO ministers. The U.S. is desperate to get NATO countries to pony up more money for Afghanistan, to keep the security effort from collapsing once NATO pulls out and Afghan forces take over.

A string of attacks across Afghanistan Sunday mark the beginning of the spring fighting season. In at least six separate attacks across four provinces, the insurgents hit Afghan and Western targets, and Afghan government buildings with a combination of rockets and suicide bombers.

There are fresh fears about the infiltration of Afghan security forces by anti-government and anti-American insurgents.

The killings of some 16 civilians in Afghanistan on Sunday allegedly by a U.S. soldier are raising new questions about U.S. military strategy: whether the surge of American troops worked and whether the U.S. troops have won over the Afghan people or alienated them.

Early reports are conflicting, but at least 16 civilians are reported dead. NATO hasn't confirmed the death toll, but has detained the accused service member.

More than 70 members of the NATO coalition have been killed by men in Afghan police or army uniforms in the last five years. After several recent attacks, new measures are being put in place.

Vladimir Putin says a strong military is needed to protect Russia's resources from foreign powers. Using strong anti-Western rhetoric, he promises to equip the army with new warplanes and missiles designed to penetrate the proposed U.S. anti-missile shield.

The plan has been for U.S. and NATO military personnel to be be in Afghanistan at least another two years to advise the Afghan military. Attacks and protests, though, are making it increasingly difficult to perform that mission.

In a video that underscores how seriously the U.S. military and NATO are taking the incident, the commander of international forces today apologizes four times for what he says was the improper disposal of Qurans at Bagram Air Field north of Kabul.