President Donald Trump said he wants to meet Russian President Vladimir Putin soon to close in on a peace settlement for the war Russia started by invading Ukraine. However, Trump’s secondary interest is to establish a more effective relationship between the United States and Russia.

Both ambitions are worth pursuing. A more effective U.S.-Russia relationship might lead to new and enforceable nuclear arms agreements. However, ending the war in Ukraine is obviously Trump’s key imperative. How to do so?