the attack was over. Tokyo transmitted the 5,000-word notification (commonly called the "14-Part Message") in two blocks to the Japanese Embassy in Washington, but transcribing the message took too long for the Japanese ambassador to deliver it in time. The 14-Part Message was not moreover a declaration of war, but was instead about sending a message to U.S. officials that peace negotiations between Japan and the U.S. were likely to be terminated. Japanese officials were well aware that the 14-Part Message was not a proper declaration of war as required by the 1907 Hague Convention III – The Opening of Hostilities. They decided not to issue a proper declaration of war anyway as they feared that doing so would expose their secret attack on Pearl Harbor to the Americans. Some historical negationists and conspiracy theorists charge that President Franklin D. Roosevelt willingly allowed the attack to happen to create a pretext for war, but no credible evidence exists to support the claim. The day after the attack on Pearl Harbor, Japan declared war on the U.S. and in response, the U.S. declared war on Japan the same day. Simultaneously with the bombing of Pearl Harbor on 7 December 1941 (Honolulu time), Japan invaded the British colony of Malaya and bombed Singapore, and began land actions in Hong Kong, without a declaration of war or an ultimatum. Both the United States and United Kingdom were neutral when Japan attacked their territories without explicit warning of a state of war. The U.S. officially classified all 3,649 military and civilian casualties and destruction of military property at Pearl Harbor as non-combatants as there was no state of war between the U.S. and Japan when the attack occurred. Joseph B. Keenan, the chief prosecutor in the Tokyo Trials, says that the attack on Pearl Harbor not only happened without a declaration of war but was also a "treacherous and deceitful act". In fact, Japan and the U.S. were still negotiating for a possible peace agreement which kept U.S. officials distracted up to the point that Japanese planes launched their attack on Pearl Harbor. Keenan explained the definition of a war of aggression and the criminality of the attack on Pearl Harbor: Admiral Isoroku Yamamoto, who planned the attack on Pearl Harbor, was fully aware that if Japan lost the war, he would be tried as a war criminal for that attack; as it turned