(Bloomberg) -- The U.S. ambassador to Germany said President Donald Trump had instructed him to “make clear that any nation who chooses to use an untrustworthy 5G vendor” risks jeopardizing intelligence and information sharing with the U.S.

The president “just called” from Air Force One, where he’s on his way back to Washington from Florida, Richard Grenell said in his Sunday tweet.

The comment seemed specifically aimed at Huawei Technologies Co., although Grenell didn’t mention the Chinese company by name.

Read more: Huawei Rift Between U.S. and Europe Becoming an Issue for NATO

To contact the reporter on this story: Ros Krasny in Washington at rkrasny1@bloomberg.net

To contact the editors responsible for this story: James Ludden at jludden@bloomberg.net, Steve Geimann

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