ATHENS — French President Emmanuel Macron and Greek Prime Minister Kyriakos Mitsotakis on Saturday vowed to assist each other in case of security threats as they boosted bilateral defense cooperation. As Macron visited Athens, the two governments signed nine bilateral deals, including the extension of an overarching defense pact that will be automatically renewed when it expires in five years. "In this partnership, there is a mutual support and assistance clause in case of armed aggression,"