Turkish Prime Minister Tayyip Erdogan warned Iraqi Prime Minister Nuri al-Maliki that it would intervene in Iraq if sectarian conflict continues in the country . . . Maliki responded by criticizing Turkey for interfering in Iraqi affairs . . . the feud erupted after insurgents detonated four car bombs in Shiite neighborhoods in Baghdad . . . sectarian conflict has increased since U.S. troops withdrew in December and after Maliki’s Shiite-led government issued an arrest warrant for the Sunni vice president Tareq al-Hashemi, which alleged that he had been operating a sectarian death squad . . . in response Sunni politicians boycotted Parliament and cabinet meetings . . . both countries have recalled their ambassadors in protest . . . at least two rockets were shot at the Turkish embassy in Baghdad last week . . . Turkey is worried that Iraq could be slipping into full-scale civil war . . . Ankara also wants to cement its support for Iraqi Sunnis and Kurds to offset Iranian ties with Iraqi Shiites . . . the spat could possibly lead to a decline in trade between Iraq and Turkey, which had hit a high of almost $12 billion in 2011.