A neoconservative, non-profit Republican group that staunchly opposes U.S. President Donald Trump is waging a war on the sitting Republican leader by running a variety of pro-impeachment ads and commercials. 

Led by political analyst Bill Kristol — son of Irving Kristol, who was known to be one of the founders of neoconservatism — Republicans for the Rule of Law urge a number of key White House officials to testify in the looming Senate impeachment trial. 

The group runs billboard ads and television commercials in four different states, targeting constituents of four anti-Trump senators — Mitt Romney (Utah), Susan Collins

Read more: Anti-Trump neo-con Republicans run pro-impeachment ads