AMMAN, Feb 19 (Reuters) - An Israeli rocket strike early on Sunday hit a building in central Damascus, killing five people and damaging several buildings in the densely populated district, witnesses and officials said. Israel has also in recent months intensified strikes on Syrian airports and air bases to disrupt Iran's increasing use of aerial supply lines to deliver arms to allies in Syria and Lebanon, including Lebanon's Hezbollah. See here for a complete list of exchanges and delays