Chatham, N.J.: Dear President Trump: Congratulations! You demonstrated your superior diplomatic and negotiating skills in your recent meeting with that ingrate Volodymyr Zelenskyy. True Americans applaud your quashing — I mean, firm handling — of the Ukrainian leader.

By the way, if you need to find Ukraine on a map, it’s north of the Black Sea and east of a bunch of inconsequential countries in Eastern Europe. When you invite foreign leaders to meet with you in the future, they’ll know they are there to listen to the Great Monoglot, not voice their own thoughts in English, and also know to pack a lunch.

Zelenskyy’s reaction to the ambush — that is, meeting — must have been as gratifying to you as it was to the worldwide TV audience. Your inclusion of the vice president in the meeting was brilliant. May I suggest, however, that next time you seat him opposite you, with the foreign ignoramus in the middle for maximum instructive effect?

You have opened what would have been a new chapter in the art of diplomacy if Germany’s leader had not already explored it in the 1930s. Speaking of history, you are one of the few who understand that Ukraine started the war by seeking membership in NATO (along with Eastern and Central Europe, Ukraine became independent from Russia in 1991). Vladimir Putin made the only appropriate response to Ukraine’s insolent courting of NATO by sending armored columns into the country. Or was this historical knowledge given to you by one of your handpicked advisors? Some slanderers say you don’t read much. Paul Denk

Princeton Junction, N.J.: Trump should just give Putin a ticker-tape parade up Broadway and get it over with. Judith L. Cabral

Brooklyn: America is a really divided nation with significant problems that can’t be solved unless we work together. Our leaders must try to make the situation better, not deepen the wounds. Therefore, it was disgraceful watching Trump deliberately make the situation worse instead of........

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