"Being a lawyer, the president knows that politicians cannot interfere in football matters, " Thompson said.

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Mr Erdogan says that he cannot interfere in Turkey's independent courts.

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No country regards ramming, disabling, or scuttling ships to be legal activities, and, except on rare occasions, even naval ships cannot lawfully interfere with foreign vessels on the high seas.

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But the scan and the treatment cannot usually be done at the same time, because they interfere with each other.

ECONOMIST: Modern X-ray technology