"If Joe Biden wants to secure his place in history and secure the United States' place in the future he needs to reverse course not just of Trump, but also of Obama and stop developing new nuclear weapons at a cost of $1.7 trillion," ICAN Executive Director Beatrice Fihn told Newsweek.
"After years of Trump putting Americans in harm's way by decimating international agreements, we can all breathe a bit easier now that he cannot start a nuclear war within minutes," Peace Action senior director for policy and political affairs Paul Kawika Martin told Newsweek.
"China always maintains that all countries should actively support WHO's work and jointly safeguard international public health security," Chinese Foreign Ministry spokesperson Hua Chunying said.
"But the memories of Gen Soleimani & the 1000s murdered, maimed & starved of food & meds by Trump's state—& economic—terrorism & crimes against humanity, will shine on," Iranian Foreign Minister Mohammad Javad Zarif tweeted.
"The new U.S. administration must stop acts of aggression and occupation," Syrian permanent representative to the United Nations Bashar al-Jaafari said.
"We hope the new administration could meet China halfway, properly handle differences in the spirit of mutual respect, and conduct mutually-beneficial cooperation in broader areas," Chinese Foreign Ministry spokesperson Hua Chunying said.
"The ROK Government expects the new U.S. administration and North Korean authorities to move forward in building relations through dialogue and negotiations in a more flexible manner," a South Korean Unification Ministry told Newsweek.
Newsweek spoke exclusively with four Israeli security officials charged with frontiers facing Syria, Lebanon, Gaza and the southern borders with Egypt and Jordan, revealing their primary security concerns for 2021.
"You know that they have problems in the United States, so, of course, they are addressing their domestic issues," Kremlin spokesperson Dmitry Peskov said.
"It doesn't seem like it's just individual, lone actors," a former senior Pentagon official told Newsweek, "but very coordinated and well-trained individuals, many of which have served in the military or have advanced weapons and explosives training."
"It was decided to pursue related measures so that there would be no gaps in efforts to advance the ROK-US relations and advance the peace process on the Korean Peninsula ahead of the launch of the new administration," South Korean officials said in a statement sent to Newsweek.
"It arouses dissaproval to classify as terrorists those who faced terrorism and made tremendous sacrifices and fought the fiercest battles on behalf of the world in order to defeat the most powerful dark and extremist force," the head of Popular Mobilization Forces said in a statement to Newsweek.
"The Iranians have delivered to their Houthi proxies in Yemen advanced UAVs," an expert told Newsweek. "They are forward deploying or prepositioning these drones in order to stage an attack against a variety of targets they have within range."
"They are the idiot and top the world's list in misbehavior as they are only keen on things provoking world laughter," Korean Workers' Party Central Committee Vice Director Kim Yo Jong, sister of Supreme Leader Kim Jong Un, said.
"Every time there's a positive movement, Beijing reacts irrationally, including military intimidation or inflammatory rhetoric," the Taipei Economic and Cultural Office in New York told Newsweek as the Chinese Foreign Ministry warned of a "dangerous path."
"It is a well-known fact that Iran was and is the extremist terror groups' most hated enemy," Iranian mission to the U.N. spokesperson Alireza Miryousefi told Newsweek.
"We got people now that would be willing to do anything to overthrow the government of the United States, and we got to start treating them like enemies," Russel Honoré, a retired lieutenant general who led Hurricane Katrina recovery efforts, told Newsweek.
"Those who practice terrorism are those who attack us and our country for six years, especially the United States of America, which has been running this war," Ansar Allah Deputy Information Secretary Nasreddin Amer told Newsweek.
"The US political opportunism is recognized by those who are honestly concerned about the scourge of terrorism and its victims," Cuban Foreign Minister Bruno Rodríguez wrote in a tweet.
"If a country intends to invade or threaten our Islamic homeland, as on January 13, 2016, our answer will be absolutely decisive and tough," Revolutionary Guard Rear Admiral Alireza Tangsiri said.
North Korean Supreme Leader Kim Jong Un wants to build both "tactical" and "super-large" nuclear weapons capable of "preemptive and retaliatory strike capabilities" against targets up to 15,000 kilometers away.
"We congratulate the friend of the martyrs, Popular Mobilization Committee Chairman Falih al-Fayyadh, on his inclusion with the honorable ones whom the U.S. administration considers enemies," Iraq's Popular Mobilization Forces told Newsweek.
"If the U.S. side insists on going its way, it will pay a heavy price for its wrong words and deeds," Chinese Foreign Ministry spokesperson Hua Chunying warned.
"It should be looked as a conspiratorial type investigation that focuses on organization and planning that predates yesterday's events," a senior law enforcement official describing the Capitol protests as "domestic terrorism" told Newsweek.
"I hope that this North Korean party congress will serve as an opportunity to contribute to peace on the Korean Peninsula and the development of inter-Korean relations," a South Korean Foreign Ministry official told Newsweek.
The Rusafa Investigation Court "decided to issue an arrest warrant against the outgoing President of the United States Donald Trump in accordance with the provisions of Article 406 of the Iraqi Penal Code," which carries the death penalty.
"The events in the Capitol in Washington today are very regrettable, but they could have been worse if there was an American embassy in that city," former Cuban ambassador José Ramón Cabañas wrote.
"What's most concerning is the lack of preparation here," the DC National Guard member said. "I don't know who in the chain of command dropped the ball. There was no plan and we were not in position when we needed to be."
"Inflammatory words turn to violent action - on the steps of the Reichstag, and now in the #Capitol," German Foreign Minister Heiko Maas tweeted.
"North Korea has two options to deal with an economic crisis: defense, or attack," Ruediger Frank, head of the University of Vienna's Department of East Asian Studies, told Newsweek, adding "it seems Kim Jong Un has decided in favor of the defensive option."