U.S. Secretary of State Mike Pompeo urged the oil industry on Tuesday to work with the Trump administration to promote U.S. foreign policy interests, especially in Asia and in Europe, and to punish what he called “bad actors” on the world stage.

Addressing top executives of the world’s largest energy companies and oil ministers in Houston, Pompeo said in prepared remarks that America’s newfound shale oil and natural gas abundance would “strengthen our hand in foreign policy.”

The United States has imposed harsh sanctions in the past several months on two major world oil producers, Venezuela and Iran. Pompeo said Washington would use all its economic tools to help deal with the situation in Venezuela, which is mired in a years-long economic crisis and where socialist President Nicolas Maduro is maintaining power despite being disavowed by the United States and about 50 other countries, as reported by Reuters.

Washington reimposed oil sanctions on Iran last year, sharply reducing its volume of crude exports in the past several months in an effort to curb Tehran’s nuclear, missile and regional activities. “We’re committed to bringing Iranian crude oil exports to zero as quickly as market conditions will permit,” he said. “We need to roll up our sleeves and compete – by facilitating investment, encouraging partners to buy from us, and by punishing bad actors,” Pompeo said in his prepared remarks.

Pompeo said the U.S. oil-and-gas export boom had given the United States the ability to meet energy demand once satisfied by its geopolitical rivals. “We don’t want our European allies hooked on Russian gas through the NordStream II project, any more than we ourselves want to be dependent on Venezuelan oil supplies,” Pompeo said, referring to a natural gas pipeline expansion from Russia to Central Europe.