Bill Nelson and Marco Rubio sounded deep concern over the situation with North Korea and say all options should be on the table, including a US military strike.
The letter was made public as Trump doubled down on his North Korea remarks, suggesting that perhaps his statement wasn't "tough enough". They're a USA territory. "I think it's an unacceptable risk and our options are limited", he told reporters in Jacksonville on Wednesday.
Rubio said he was not advocating for a strike but, "as bad as that would be, it would be worse to live in a world held hostage by this man's ability to strike the United States with a weapon".
Rubio's defense of the President's comments is at odds with the opinions of some of his colleagues in the Senate - including Republicans - who criticized Trump for the harsh rhetoric.
"Due to the serious and mounting risk of arrest and long-term detention of U.S. citizens, the Secretary of State restricted the use of USA passports to travel into, in, or through North Korea effective Friday, September 1, 2017". Meanwhile, North Korea's whole shtick is being dismissive of everything the United States does, so it makes sense that Trump's go-to reaction is to lash out with loud and blusterous threats of violence.More news: Indiana man accused in officer death may face death penalty
"I don't have any concern about inflaming anything", replied Rubio.
North Korea's leader Kim Jong Un watches a military drill marking the 85th anniversary of the establishment of the Korean People's Army on April 26, 2017.
Tillerson also said Americans "should sleep well at night" when asked by reporters if people should be anxious about the looming nuclear threat from North Korea - striking a starkly different tone from Trump's earlier comments.