CAIRO/BERLIN - President Mohamed Morsi is to leave Egypt's political crisis behind on Wednesday with a short trip to Germany to seek urgently needed foreign investment and convince Europe of his democratic credentials.

But with the Egyptian army chief warning on Tuesday that the state was on the brink of collapse after days of lethal street violence, Morsi cancelled plans to go on to Paris from Berlin and will instead hurry back to Cairo later in the day.

Fifty-two people have been killed in unrest surrounding the two-year anniversary of Egypt's popular revolution, whose values Morsi's critics say he has betrayed.

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