Envoys will reconvene next week in a bid to prevent the price cap on Russian crude from ratcheting higher at the end of July.

"Every time we make a sanctions pact, it gets a little harder," said Danish Foreign Minister Lars Lokke Rasmussen.

"I can't offer you any guarantees," the EU's top diplomat Kaja Kallas told the Kyiv Independent when asked if she can offer any guarantee that the price cap on Russian oil will…