SS Robin Moor Sunk By Nazi U-Boat

The transcript describes a series of events involving the sinking of the Robin Moore by a German submarine, marking a significant threat to America's freedom of the seas. Reports reach Washington about the incident, highlighting the crisis posed by the U-boat challenge 700 miles off Brazil. The Robin Moore, an American-flagged ship, was deliberately sunk, and the situation underscores the German sea menace America faces once more.

What happened to the Robin Moore?

What is the significance of the crisis mentioned?