The November general elections were the second since Myanmar began its transition away from a military dictatorship toward a democracy. The country's zig-zag path over the last half-century shows that progress is extremely slow and hard against an entrenched and ruthless military dictatorship. The military claimed it was acting in response to "fraud" in last year's election, which the party had won. The coup follows November's election, in which the country's National League for Democracy (NLD) party won with 83 percent of the votes. The Parliament was expected to approve the election results and install the next government. The coup is now accomplished.
"The Lady" - as Ms Suu Kyi is known - assumed leadership of the country under the newly created role of "state counsellor". The sacrifice of her freedom-she spent 15 years under house arrest between 1989 and 2010-and the force of her personality made the 2011 power-sharing deal possible.
It's not clear how much impact the threat of additional US sanctions would have on Myanmar's military leaders, many of whom were already hit by the Trump administration for a brutal crackdown on Rohingya Muslims and remain on good terms with China - the country's largest trading partner.
After ousting the democratically elected government in a coup d'etat on Monday, Myanmar's military got on with the task of naming a new cabinet. Rohingya and other ethnic and religious minorities were largely blocked from voting.
Kyi said the negative reaction from fellow Canadians in the comment section of online stories about the coup "broke my heart". The Biden administration, facing its first spontaneous foreign-policy test, will surely threaten, and then impose, further sanctions.
The Association of Southeast Asian Nations, of which Myanmar is a member, called for "dialogue, reconciliation and the return to normalcy" while in Bangkok, police clashed with a group of pro-democracy demonstrators outside Myanmar's embassy.
Menendez charged that the Myanmar army was guilty of "genocide" against minority Rohingya Muslims - a determination yet to be stated by the US government - and of a sustained campaign of violence against other minorities.
"Civil-military relations in a coup-prone country like Myanmar are complex", Klaas said. "We are monitoring the situation closely and stand with the people of Burma, who have already endured so much in their quest for democracy and peace".
"The Burmese military has arrested the country's leaders after credible evidence of widespread voter fraud became impossible to ignore...sounds like the controlled media and Biden admin are scared this might happen here", one influencer with more than 45,000 subscribers on the encrypted messaging app Telegram wrote.
"In a democracy, force should never seek to overrule the will of the people or attempt to erase the outcome of a credible election".
"I posted it because I am relaxing myself and do my own business". Observers with knowledge of Myanmar's secretive military suspect Min Aung Hlaing's personal ambitions and his limited options were a factor.
The victor is China, which will now become an ever-more important source of financial help as Western sanctions take a toll.