Hagel Arrives in Afghanistan --- KABUL—U.S. Defense Secretary Chuck Hagel arrived in Afghanistan on Saturday for talks with U.S. military commanders but said he wasn't going to meet with Afghan President Hamid Karzai, a sign of American frustration over Kabul's failure to sign a bilateral security agreement. -- U.S. officials had wanted an agreement signed by the end of this year. In a meeting with reporters Saturday, Mr. Hagel declined to set a new "cutoff point" but suggested a possible deadline of late February, before a meeting of defense ministers from the North Atlantic Treaty Organization. --He traveled to Afghanistan to meet with troops, he said, and didn't seek a meeting with Mr. Karzai. -- "That was not the purpose of the trip," Mr. Hagel said. "I never received an invitation to meet with him. I didn't expect a meeting with him." -- U.S. Marine Corps Gen. Joseph Dunford, the commander of international forces in Afghanistan, told reporters in a separate briefing Saturday that the U.S. doesn't routinely enter Afghan homes and wouldn't regularly do so in the future. But he said the U.S. would need to reserve the right to do so in certain situations. -- "There are some circumstances where we could envision a requirement to enter Afghan homes, for example a hostage situation," Gen. Dunford said. "If there is an issue involving self-defense or force protection, there may be a requirement to enter Afghan homes." --- After arriving in Afghanistan, Mr. Hagel met with his counterpart, Afghan Minister of Defense Bismullah Khan Mohammadi, a meeting also attended by Deputy Interior Minister Mohammad Ayub Salangi and the head of the Afghan National Army. - More, WSJ