You forgot this part, “and a period of peace will be granted to mankind”.
Since the message is directed specifically towards Russia, we can certainly attest that country has known peace since the 1984 consecration.
In a quotation written by Cardinal Joseph Ratzinger (later Pope Benedict) he says, "Sister Lucia personally confirmed that this solemn and universal act of consecration corresponded to what Our Lady wished Sim, està feita, tal como Nossa Senhora a pediu, desde o dia 25 de Março de 1984: Yes it has been done just as Our Lady asked, on 25 March 1984: Letter of 8 November 1989). Hence any further discussion or request is without basis.".
In an article in Inside the Vatican by Delia Gallagher, it was mentioned that Sister Lucia had a special vision that confirmed theaction corresponded to Our Lady's requests. Cardinal Ricardo Vidal of Cebu in the Philippines also said that Sr Lucia had told him, "If the consecration had not been done in 1984, there would have been nuclear war in 1985".
Sr. Lucia said John Paul II accomplished it. End of matter. We now need to focus our prayers for peace on the Middle East.