"Pearl Harbor" is the No. 1 trending topic on social media Friday morning as Americans recognize the anniversary of the Japanese attack on Pearl Harbor on Dec. 7, 1941, "a date which will live in infamy."

However, President Donald Trump did not make any mention of Pearl Harbor in a series of tweets Friday morning. He instead focused on criticizing Special Counsel Robert Mueller and his investigation into possible collusion with Russia during the 2016 election.

"Robert Mueller and Leakin' Lyin' James Comey are Best Friends, just one of many Mueller Conflicts of Interest," Trump began his Twitter rant.

He also called his deputy attorney general, Rod Rosenstein "totally conflicted." Rosenstein oversaw Mueller's probe until last month when Trump fired Jeff Sessions and named Matt Whitaker his acting attorney general.

Robert Mueller and Leakin’ Lyin’ James Comey are Best Friends, just one of many Mueller Conflicts of Interest. And bye the way, wasn’t the woman in charge of prosecuting Jerome Corsi (who I do not know) in charge of “legal” at the corrupt Clinton Foundation? A total Witch Hunt... — Donald J. Trump (@realDonaldTrump) December 7, 2018

....Will Robert Mueller’s big time conflicts of interest be listed at the top of his Republicans only Report. Will Andrew Weissman’s horrible and vicious prosecutorial past be listed in the Report. He wrongly destroyed people’s lives, took down great companies, only to be........ — Donald J. Trump (@realDonaldTrump) December 7, 2018

.....overturned, 9-0, in the United States Supreme Court. Doing same thing to people now. Will all of the substantial & many contributions made by the 17 Angry Democrats to the Campaign of Crooked Hillary be listed in top of Report. Will the people that worked for the Clinton.... — Donald J. Trump (@realDonaldTrump) December 7, 2018

....Foundation be listed at the top of the Report? Will the scathing document written about Lyin’ James Comey, by the man in charge of the case, Rod Rosenstein (who also signed the FISA Warrant), be a big part of the Report? Isn’t Rod therefore totally conflicted? Will all of.... — Donald J. Trump (@realDonaldTrump) December 7, 2018

...the lying and leaking by the people doing the Report, & also Bruce Ohr (and his lovely wife Molly), Comey, Brennan, Clapper, & all of the many fired people of the FBI, be listed in the Report? Will the corruption within the DNC & Clinton Campaign be exposed?..And so much more! — Donald J. Trump (@realDonaldTrump) December 7, 2018

Trump's only other tweet Friday morning said "China talks are going very well!" He did not elaborate.

Trump previously mentioned Pearl Harbor in a meeting this summer with Japanese Prime Minister Shinzo Abe.

"I remember Pearl Harbor," the president said in June, referring to the surprise attack that pushed the U.S. into World War II.

The Washington Post reported in August that Trump made the remarks before criticizing Japan's economic policies and the U.S. trade deficit. He also sought a bilateral trade deal that is more favorable to U.S. exporters of beef and automobiles.

Trump's tweets come as Mueller faces two court deadlines Friday and ex-FBI director James Comey is scheduled to appear before lawmakers on Capitol Hill.

Trump has frequently criticized Mueller's investigation as a "witch hunt," despite producing dozens of criminal charges and guilty pleas from Trump associates including former campaign chairman Paul Manafort and former personal attorney Michael Cohen. Trump has denied all wrongdoing.

Mueller is set to reveal more details about his Russia investigation on Friday as he and federal prosecutors in New York will have to file separate memos in court detailing the cooperation of Cohen, who has admitted lying to Congress and orchestrating hush-money payments to protect the president. The Associated Press reports Mueller's team will also disclose what they say former Trump campaign chairman Paul Manafort lied about when his plea deal fell apart last month.

Update: Trump recognized Pearl Harbor Day in a tweet late Friday morning.

"Today, we honor those who perished 77 years ago at Pearl Harbor, and we salute every veteran who served in World War II over the 4 years that followed that horrific attack. God Bless America!" his Twitter account said.