Sri Lanka, March 29 -- Ukrainian President Volodymyr Zelensky said that he has received intelligence on Russia conducting surveillance of US bases in the Middle East and Gulf regions.

He claimed yesterday that seven areas had been surveilled or photographed this week - including a mix of US, Middle Eastern and British bases in Kuwait, Saudi Arabia, Turkey and Qatar, and the US-British base on Diego Garcia in the Indian Ocean.

CNN has reached out to the Russian Embassy in the US for comment.

US officials told CNN that last week Iran launched two intermediate-range ballistic missiles at Diego Garcia, a joint US-UK military base in the Indian Ocean. While neither of the missiles struck the base, the attack revealed Iran's long-range capab...