COURTESY BY: https://www.bolnews.com/ Turkey and Greece have decided to conduct rival naval exercises off the Greek Island of Crete on Tuesday. The announcement comes after rising tensions over claims to gas and oil in the Eastern Mediterranean. Turkey has also sent an official warning to other vessels. Germany is likely to send its Foreign Minister Heiko Maas to Athens and Ankara on Tuesday as it tried to decrease tension. The Minister is likely to meet Greek Prime Minister Kyriakos Mitsotakis before negotiations in Ankara with his Turkish counterpart. According to…