By Gulsen Solaker and Umit Bektas ANKARA (Reuters) - Twenty-eight people were killed and dozens wounded in Turkey's capital Ankara on Wednesday when a car laden with explosives detonated next to military buses near the armed forces' headquarters, parliament and other government buildings. The Turkish military condemned what it described as a terrorist attack on the buses as they waited at traffic lights in the administrative heart of the NATO member's capital. The attack, the latest in a series of bombings in the past year mostly blamed on Islamic State, comes as Turkey gets dragged ever deeper into the war in neighboring Syria and tries to contain some of the fiercest violence in decades in its predominantly Kurdish southeast.