In newly disclosed text messages shared with Congress, the top U.S. diplomat to Ukraine writes to a group of other American diplomats that “I think it’s crazy to withhold security assistance for help with a political campaign.”

The exchange, provided by former U.S Special Envoy to Ukraine Kurt Volker as part of his closed-door deposition before multiple House committees Thursday, shows what appears to be encrypted text messages he exchanged with two other American diplomats in September regarding aide money President Donald Trump ordered to be held back from Ukraine.

In the exchange, obtained by ABC News, the concerns are expressed by Bill Taylor, the top U.S. diplomat to Ukraine. Gordon Sondland, the United States Ambassador to the European Union, responds to Taylor, saying that charge is “incorrect,” insisting the president has been “crystal clear no quid pro quo of any kind”.