ATHENS (Reuters) - Greece has sent a frigate to rescue a container ship believed to carrying hundreds of undocumented migrants and in distress off its southern island of Crete, the Greek coastguard said on Tuesday. The Kiribati-flagged vessel, with about 700 people aboard, was sailing 30 nautical miles (55 km) southeast of Crete. The ship reported an engine problem in an area with strong winds ...