Czechoslovak leadership received last-minute warnings of the invasion

Archive materials which are now in the hands of the Czech Foreign Ministry indicate that the Czechoslovak leadership received two last-minute warnings of the planned invasion. One came from the Czechoslovak embassy in Hungary on the basis of an anonymous phone call made at 5 pm on August 20th. At 6pm it arrived at the Czechoslovak Foreign Ministry in Prague and was deciphered but it did not reach the president in view of the fact that it was based on an anonymous phone call. A second last-minute warning arrived from Poland, at eight thirty. Historians say that in any case the warnings came too late to make any difference. Some believe that Moscow itself issued many thinly veiled warnings about the use of force which the Czechoslovak leadership disregarded or did not take seriously enough.