Another illusory indicator likely noticed by Soviet analysts was a high rate of ciphered communications between the United Kingdom and the United States. Soviet intelligence was informed that "so-called nuclear consultations in NATO are probably one of the stages of immediate preparation by the adversary for RYaN". To the Soviet analysts, this burst of secret communications between the United States and the UK one month before the beginning of Able Archer may have appeared to be this "consultation". In reality, the burst of communication was about the US invasion of Grenada on October 25, 1983, which caused a great deal of diplomatic traffic as the sovereign of the island was Elizabeth II.