Turkey, Azerbaijan and Georgia signed a dealtoday to build a pipeline that would send the oil riches of the Caspian Sea to international markets without going through Russia or Iran. President Clinton looked on as the leaders from the three nations signed a series of accords to build a pipeline from the rich oil fields of Azerbaijan to Turkey's Mediterranean port of Ceyhan. The pipeline, which is expected to cost $2.4 billion, would cross through the former Soviet republic of Georgia.