U.S. Secretary of State Hillary Rodham Clinton says this week's deadly suicide bombings in Iraq are a sign that extremists fear the Iraqi government is succeeding. On her first visit to Iraq as America's top diplomat, Clinton said the country has made tremendous strides despite the recent violence and continues to deserve support as the Obama administration moves to reduce the U.S. military presence there. Clinton arrived in Baghdad Saturday on an unannounced trip after suicide bombings in the capital and outside killed at least 148 people on Thursday and Friday. The attacks have exposed gaps in security as Iraq takes over from U.S. forces in protecting the country, according to a report of Associated Press.