Has Trump Irreversibly Altered the GOP’s Foreign Policy?

In his sledgehammer assault against the cornerstone institutions of the Western alliance, Donald Trump is replaying one of the defining confrontations in the Republican Party’s history. Only this time, the outcome is being reversed—with potentially tumultuous implications for both the GOP and the future of American foreign policy.

Trump is reprising the conflict between the Republican Party’s internationalist and isolationist wings, which raged between the end of World War I and the early Cold War. That extended scuffle crystallized in the battle for the party’s 1952 presidential nomination, when Dwight Eisenhower, the hero of the internationalist forces, beat Senate Republican Leader Robert Taft, who championed an earlier generation of “America First” nationalism and isolationism. …

This struggle over the GOP’s foreign-policy direction both echoes and reconfigures the earlier conflict. Then, as now, the GOP’s isolationist elements were dubious of international engagement in all three of its principal forms: military and diplomatic alliance, free trade, and openness to immigration. CONT.

Ronald Brownstein, The Atlantic