UN rapporteur Tom Andrews expressed alarm at reports of soldiers being transported into Yangon, noting that such movements had previously preceded killings, disappearances and mass arrests.
The march comes as Myanmar is plunged into its second nationwide internet blackout this week.
The move comes after thousands of people in Myanmar flocked to Twitter and Instagram to express their opposition to Monday's takeover by the army and the ousting and arrest of elected leader Aung San Suu Kyi.
Coup comes after Aung Suu Kyi's party had won over 80 percent of parliamentary seats available in November's elections – a seemingly unacceptable number to a military that has had 25 percent of seats ring-fenced for them.
UAVs and various armoured vehicles will be at the service of Tunisian security forces.
Washington recently sent B-52 bombers close to the Iranian airspace, while Tehran is yet to come out of the shock of nuclear scientist Mohsen Fakhrizadeh's assassination.
Prime Minister Johnson announced he will increase his country’s military budget by $22 billion to establish a new space command and an artificial intelligence agency.
The executive order signed by President Donald Trump lists 31 companies and claims that China was using them for "increasing exploitation" of US investment capital to fund military and intelligence services.
Officials in South Korea and the US say Pyongyang could use Saturday's parade marking the 75th anniversary of the founding of its Workers' Party of Korea to show off a new intercontinental ballistic missile.
Meanwhile, Turkey announced that it will be starting its annual five-day military drill with the Turkish Republic of Northern Cyprus.
India says troops preempted Chinese military activity on the southern bank of Pangong Lake, which is divided by the de facto frontier between the rivals.
In light of the Armenian provocations, Turkey and Azerbaijan will set up a large-scale joint military exercise in Baku.
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