adjective. at a complete standstill because of opposition of two unrelenting forces or factions.

verb. Simple past tense and past participle of deadlock.

adjective. at a complete standstill because of opposition of two unrelenting forces or factions

"By funding right-wing think tanks and ensuring that they have dominance over the Republican Party, Lukoil (and by extension, Russia) can ensure that the Senate will remain deadlocked on crucial climate change legislation, thus preventing the United States from taking a leadership role in stopping climate change."

obstructed  

blocked  stalemated  

deadlock