Well, Donald McRonald ---->
Lev was working with Rudy G. (your dedicated private attorney) on behalf of yourself - as a private client. Whatever Rudy G & Lev were doing in Ukraine was on your behalf - your personal/private behalf - not on our country's behalf/benefit!
And, what were Rudy & Lev actually doing in Ukraine, you ask? Well, for starters, they were trying to manuever the newly-elected President of Ukraine - Volodymyr Zelensky - into ANNOUNCING an investigation of Joe Biden's son, Hunter, who happened to be serving on the board of the Ukraine gas giant - Burisma!
How were they to accomplish this task, you ask?
By woking hand-in-glove with the current Ukrainian General Prosecutor - Yuri Lutsenko - whereby Rudy & Lev would cause the removal of the U.S. ambassador to Ukraine - Marie Yovanovich - who was rooting out corrupt Ukrainian politicians like Yuri Lutsenko, himself - and in exchange - Lutsenko would dig up dirt on Hunter Biden & thus sully the reputation of Joe Biden, Hunter's dad. This would make Biden a much weaker political rival to Trump in the 2020 presidential campaign.
All of this was occurring well before Trump's infamous July 25, 2019 phone call to newly-elected Ukrainian president - Volodymyr Zelensky. Trump even said - during that call - that Marie Yovanovich - the U.S. ambassador to Ukraine - would "go through some things". She had - in fact - as she was ultimately called back home in April - out of real concerns for her well-being & physical safety. Apparently she was being menacingly tracked/monitored hourly by Trump apparatchicks on up to her recall date in April.
Lev Parnas, appearing on the Rachel Maddow show this past Wed. - January 15, 2019 - unequivocally said that Trump knew exactly what he & Rudy G. were engaged in during their time in Ukraine's capital - KIev.