Although the structure appeared rickety, it was actually very strong. Greece was safe only as long as retaliation from Italy was assured. And why wouldn't it be? If Italy wavered in its support of Greece, then someone might try and dust Greece, which would set off a chain reaction that would eventually obligate someone to destroyFrance, and since Italy is France's ally, they might try to get Italy at the same time.
And so the Italian foreign minister went on television daily to proclaim Italy's strong alliance with Greece andFrance, an alliance so strong that it would last forever. Or until Rome was a crater, whichever came first.