PARIS—Europe needs to stop being naive when it comes to defending its interests and build its own military capacity, French President Emmanuel Macron said on Tuesday after Greece sealed a deal for French frigates worth about €3 billion ($3.51 billion). France was plunged into an unprecedented diplomatic crisis with the United States, Australia, and Britain earlier this month over a trilateral nuclear security deal which sank a multi-billion dollar French-designed submarine contract with Canberra. That has caused much soul searching in Paris over its traditional alliances. Speaking for the first time on the issue, Macron on Tuesday seized the opportunity to urge for more European autonomy as Washington increasingly reorientates its interests towards China and the Indo-Pacific. “The Europeans must stop being naive. When we are under pressure from powers, which at times harden [their stance], we need to react and show that we have the power and capacity to …