The White House is weighing new export controls on advanced technologies, threatening Russia’s strategic ambitions, and plans to surge natural gas to Europe if Moscow invades Ukraine, administration officials said.

“We are prepared to implement sanctions with massive consequences that were not considered in 2014. That means the gradualism of the past is out, and this time, we will start at the top of the escalation ladder and stay there,” a senior administration official told reporters Tuesday, citing a range of economic tools and controls with immediate and longer-range potential to hurt the Russian economy.