Israelis in the town of Sderot watched a Palestinian missile on Wednesday, before a cease-fire. Credit...Lefteris Pitarakis/Associated Press WASHINGTON — President Obama skipped dessert at a long summit meeting dinner in Cambodia on Monday to rush back to his hotel suite. It was after 11:30 p.m., and his mind was on rockets in Gaza rather than Asian diplomacy. He picked up the telephone to call th