The truck crossed 5 countries and Russian citizens were involved in the operation.. Russia reveals the results of the investigation into the bombing of the Crimean bridge and its decision on the nuclear response

Russia revealed part of the results of its investigation after the Crimean bridge bombing, accusing the Ukrainian intelligence services of carrying it out, while the United States and Germany considered the Kremlin's nuclear threats "irresponsible."

In his meeting with Russian President Vladimir Putin;

The head of the Russian Investigative Committee on the bombing, Alexander Bastrykin, presented the findings of an investigation into the explosion that occurred on Saturday and caused a fire on the bridge.

Bastrykin revealed, this evening, that citizens of Russia and foreign countries helped the Ukrainian intelligence in preparing for the attack.

He added that the Russian Federal Security Service determined the identity of the masterminds of the "terrorist" attack on the Crimean bridge, and the destination of the truck that was used in the bombing.

He revealed that it set off from Bulgaria to Georgia, then to Armenia, before reaching North Ossetia in Russia, and continuing its path towards the Krasnodar region in southwest Russia, bordering the Crimea.

Meanwhile, Russian President Vladimir Putin accused the Ukrainian intelligence of planning and carrying out what he described as the terrorist attack on the Kerch bridge linking Russia with the Crimea.

Putin said, during a meeting with Bastrykin, Sunday evening, that "there is no doubt that it was a terrorist attack aimed at destroying a sensitive site in the Russian infrastructure."

Al-Jazeera correspondent stated that the director of the FBI briefed Putin on the progress of the investigations into the bridge bombing, and TASS news agency quoted the head of the Russian Investigative Committee that "the Ukrainian special services are responsible for the attack."

On the other hand, the New York Times quoted a senior Ukrainian official as saying that the Ukrainian intelligence had orchestrated the bombing of the Crimean Bridge, with a truck-loaded bomb.

The newspaper said it was not clear whether the driver who was killed in the explosion was aware of the presence of explosives on the truck or not.

Satellite images, taken on Saturday and published by the Mexar company, showed the extent of the damage caused by the explosion to the Qurum bridge, as the roadbed collapsed on one line of vehicles, and the fuel tanks of a train set on fire on the railway line parallel to the bridge.

Divers prospecting for damage

Russian Deputy Prime Minister Marat Khosnolin was quoted by local news agencies as saying that divers will start work today to determine the extent of the damage to the Crimean bridge, with a more detailed survey over water to be completed by the end of the day.

The Russian Ministry of Transport announced that the movement of freight trains and long-distance trains passing through the Crimean Bridge was organized on Sunday, according to the established schedule.

The movement of vehicles resumed to a limited extent about 10 hours after the explosion.

"The situation is manageable, it's disturbing, but it is not catastrophic. Of course, it aroused feelings and there is a great desire for revenge," the Russian governor of Crimea, Sergei Aksionov, told reporters.

The bombing of the bridge, which is considered an important symbol of Moscow's annexation of the Crimea, came amid what Ukraine describes as defeats suffered by Russia on the battlefield, and would further weaken the Kremlin's messages of reassurance that the conflict is proceeding as planned.

Russia annexed Crimea from Ukraine in 2014, and President Vladimir Putin inaugurated the Crimean Bridge, which is 19 kilometers long and connects the region to Russia's transport network, during a grand celebration four years later.

Russian nuclear doctrine and the bombing of the Crimean bridge

On the other hand, the press secretary of the Russian President, Dmitry Peskov, considered, on Sunday, that the terrorist attack on the Crimean bridge does not fall within the justifications for activating the Russian nuclear doctrine.

Peskov answered a question about whether the terrorist attack on the Crimean bridge was one of the justifications for activating the Russian nuclear doctrine, saying, "No, it is a completely wrong formula for the question," according to what Russia Today reported.

On September 21, Russian President Vladimir Putin made a veiled threat to use nuclear weapons, and announced the mobilization of reservists after field progress made by the Ukrainian army.

Biden and Schultz discuss Russian threats

On the other hand, German Chancellor Olaf Scholz spoke by phone to US President Joe Biden on Sunday and agreed that the latest nuclear threats issued by the Kremlin are "irresponsible" and that Russia's decision to partially mobilize is a "fatal mistake," according to a German government statement.

The German government added in the statement that the phone call, which lasted about an hour, focused on the ongoing preparations for the upcoming G7 and G20 meetings, which will address "the Russian invasion of Ukraine and its consequences."

The statement stated that the two leaders agreed not to completely accept Russia's annexation of Ukrainian lands, describing this as an additional escalation.

They also agreed that the announcement of partial mobilization showed the "bitter price" that the Russians would have to pay for President Vladimir Putin's miscalculation.

On the issue of the attacks on the Nord Stream pipelines, the two leaders stressed the need to deal decisively with any sabotage of critical infrastructure.