Military science

US President Donald Trump once again expressed doubts about the effectiveness of the nuclear agreement with Iran, criticizing Tehran for a missile test, and accusing them of cooperating with North Korea, TASS reported, quoted by BTA.

"Iran has just tested a ballistic missile capable of reaching Israel. Not much of an agreement we have", wrote the American president on Twitter.

Canadian fighters participate in the security of NATO air space, said the Alliance press service.

Since yesterday Canadian CF-188 patrols with Romanian MiG21, they are located in the Mihail Kogalniceanu base. Canadian aviation replaced the British Air Force Air Defense Joint Task Force, a watch on air sovereignty.

Serbian citizens have another month to legalize the weapons they possess illegally.

Since the beginning of June, 350 pieces of weapons, 100 hand grenades and explosive devices have been handed in, along with about 25,000 pieces of various types of ammunition.

North Korea on Saturday morning fired what are believed to be three short-range ballistic missiles, one of which exploded shortly after launch, the U.S. Pacific Command said.

The missiles were launched near Kittaeryong between 6:49 a.m. Seoul time (5:49 pm. Friday ET) and 12:19 p.m. The second missile “appears to have blown up almost immediately,” Pacific Command said.

Members of the Serbian Army's 37th Mechanized Battalion have taken part in a tactical live fire exercise held in Russia's Western Military District.

The Serbian Ministry of Defense announced this on Thursday, specifying that Serbian troops took part in the Russian military drill launched on August 6 as the only foreign participants.

Turkish pilots engaging in mock dogfights with their Greek counterparts over the Aegean Sea have recently displayed signs of nervousness and inexperience, according to Hellenic Air Force sources.

A hand grenade was found in the lawn in front of a supermarket in Sofia's Mladost 2 residential district, reported Standart News.

The area was immediately cordoned off by a patrol of the local police department and an anti-bomb squad was called in.

The sapper seized the grenade but did not find any other explosive devices in the area.

The House of Representatives of the US Congress has adopted a measure demanding reports on Russian-Serbian cooperation, said a senior member of the Foreign Affairs Committee of the House of Representatives Eliot Engel.

"The measure adopted by the House of Representatives today is part of the National Defense Act 2018", said Engel on Friday.

Russia’s new main battle tank, the T-14 “Armata,” is slated to become operational in 2020. The advanced third generation tank will replace older Soviet-era designs and is set to be a formidable opponent to NATO designs including the American M1A2 Abrams.

The Jahan Kosha Cannon, which literally means “The Destroyer of the World,” was built in 1637 AD by craftsman Janardan Karmakar of Dhaka.

It was commissioned by Daroga Shree Mohammad and constructed under the supervision of Hara Ballav Das.

The Karmakars used to be blacksmiths by profession, but, over time, they have produced a number of engineering masterpieces.