Special forces teams and army tanks surrounded the Green Zone housing Iraq’s government as Prime Minister Nouri al-Maliki fiercely clung to power Sunday, taking the stability of the country to the brink at a moment when it is already facing a lethal challenge from radical Islamist fighters. In actions that had all the markings of a political coup, Maliki gave a defiant late-night speech in Baghdad saying he would lodge a legal case against the country’s president, who has resisted naming him as the candidate for another term as prime minister. Tanks rumbled onto major bridges and roads in the capital as security forces were put on high alert, with militiamen also patrolling Shiite neighborhoods. The special forces teams surrounding the Green Zone were taking orders directly from the prime minister, security officials said. Maliki’s critics blame him for overseeing the de facto fragmentation of the country, […]