statesmanlike
From Longman Dictionary of Contemporary Englishstatesmanlikestates‧man‧like /ˈsteɪtsmənlaɪk/ adjective showing the qualities of a statesman – used to show approval his statesmanlike handling of the crisisExamples from the Corpusstatesmanlike• No, his only noticeable affectation was a statesmanlike calmness.• He is a master of the climb-down, presented defiantly as a statesmanlike change of opinion.• But Clinton settled on Gore, the statesmanlike senator from Tennessee.• Mr Putin adopted a statesmanlike stance until he was asked a hostile question about the war.