How did the classical empires in the mediterranean and the middle east promote trade and project military power?

The classical empires projected military power through the imperial conquest of their foes. They also used diplomacy and negotiation in seeking alliances with smaller countries or tribes. They also built defensive walls and military roads that facilitated easy movement of the army. They promoted trade through integration, building of roads and issuance of currency

russia and the united states we're at a verbal war that was nuclear russia wanted more power and to take over more countries