When Donald J. Trump took a run at building a tower in Moscow in the middle of his 2016 presidential campaign, it was the high point of a decades-long effort to plant the “Trump” flag there.
The role his former lawyer Michael D. Cohen played in the endeavor entered the spotlight again on Thursday after he pleaded guilty to misleading Congress. But the effort was led in large part by Felix Sater, a convicted felon and longtime business associate with deep ties to Russia.
To get the project off the ground, Mr. Sater dug into his address book and its more than 100 Russian contacts — including entries for President Vladimir V. Putin and a former general in Russian military intelligence. Mr. Sater tapped the general, Evgeny Shmykov, to help arrange visas for Mr. Cohen and Mr. Trump to visit Russia, according to emails and interviews with several people knowledgeable about the events.