North Korea has lashed out at U.S. regional allies South Korea and Japan for acting on Washington's behalf and undermining Kim Jong Un's nuclear ambitions.
The Russian president said sanctions on North Korea are “useless and ineffective.”
The government has approved a one-off long break around Korean Thanksgiving.
An unlimited warhead weight allowance would enable the South to strike North Korea with greater force in the event of a military conflict.
Trump, Mattis and Haley have all suggested a strong response is necessary.
"The stronger and the smarter one will show restraint," Russia's deputy foreign minister said.
The president's controversial tweets may cause more than anger, lawmakers fear.
China has lambasted the West and its allies over recent weeks for promoting the "China responsibility theory" for North Korea.
The White House is said to be monitoring the situation in North Korea very closely following the latest test.
The U.S. president said Pyongyang’s latest test was an “embarrassment” to China and urged Seoul to abandon its attempts at diplomacy with Kim Jong Un.
Hydrogen bombs have never been used in warfare and can generate force hundreds of times higher than the atomic bombs used at Hiroshima and Nagasaki.
Pyongyang carried out its sixth and most powerful nuclear test on Sunday, causing a 6.3 magnitude earthquake.
Pyongyang has slammed South Korean media as a threat, while Donald Trump has previously called journalists "enemies of the American people."
Tensions have escalated swiftly between the hermit state and foreign critics, and France warned the situation will become "explosive."
German Foreign Minister Sigmar Gabriel said a war between the U.S. and North Korea could be worse than World War II.
After North Korea's latest missile test, Japan asked the U.S. to call for even more economic sanctions against Kim Jong Un's regime.
Four U.S. Marine Corps’ F-35B Lightning II joined pilots from Japan and South Korea in a show of "ironclad commitment."
A majority of 58 percent polled by Pew Research Center said they did not have confidence President Donald Trump would make wise nuclear decisions.
More sanctions will not curb North Korea's ambitions, Russia's deputy foreign minister said, but a U.S. military response will not do it either.
South Korean intelligence services say he fathered a third child with his wife Ri Sol Ju in February.
North Korea reportedly fired a ballistic missile over Japanese territory, prompting major concerns and emergency meetings in Tokyo.
It also may launch a ballistic missile in the coming days.