TEL AVIV, June 20 (Reuters) - Israeli television broadcasters are considering pulling the plug on the CNN news channel in protest at comments made by U.S. media mogul Ted Turner, officials and sources at the companies said on Thursday. Turner, founder of the 24-hour Cable News Network, was quoted on Tuesday as saying the Israeli military was engaged in "terrorism" against the Palestinians that could be compared to Palestinian suicide bomber attacks on Israelis. A senior board member at the YES satellite television broadcaster and a source close to the head of Israel's three cable providers, now engaged in a...