US Ambassador to the United Nations Nikki Haley voiced concern on Friday that nuclear inspectors were not granted access to Iranian military bases, and she urged the International Atomic Energy Agency to use all its authorities to ensure Tehran’s compliance with the 2015 nuclear deal.

“I have good confidence in the IAEA, but they are dealing with a country that has a clear history of lying and pursuing covert nuclear programs,” Haley told a news conference after returning from a trip to Vienna, where the IAEA is based.

“We are encouraging the IAEA to use all the authorities they have and to pursue every angle possible” to verify compliance with the nuclear deal.

On the other hand, Haley said on Friday that US sanctions against Venezuela were a strong message to President Nicolas Maduro that the United States would not tolerate a “dictatorship” in that country.

Haley, speaking at United Nations headquarters in New York, said she had not been asked to meet at the UN with visiting Venezuelan foreign minister Jorge Arreaza.