Jack Lew

The Treasury and Commerce departments said the regulations that take effect Monday simplify procedures for tourism, telephone and Internet investments, and money transfers to Cuba.

The changes were first reported by The Associated Press on Thursday and come as both countries seek to transform their new diplomatic relationship into deeper commercial ties.

The official, who spoke on condition of anonymity in line with government regulations, said Tsipras told Lew that Greece has proven that it does want to strike a deal but that the viability of any agreement must acknowledge what the Greek people has gone through in the last five years.