BBC News

At a secret location away from the eyes of intruders, Ukrainian engineers are tested by a long -range drone called Riberd.
The machine, which looks like a small plane with wings, is placed on the launch platform, and it extends like an arrow on the bow and the juicy and then fired in the air.
Raybird can fly non -stop for more than 20 hours and cover a distance of more than 1000 km (620 miles). It carries out tasks to destroy both goals on the front line and the depth of Russia.
Among their goals are oil refineries and fuel warehouses.
But after Russia and Ukraine have reached separate agreements with the United States on a partial ceasefire, tasks like this must stop.
In addition to agreeing to the ceasefire in the Black Sea after this week's talks in the Kingdom of Saudi Arabia, the two countries committed to stop attacking the energy infrastructure of each other – which was already agreed in theoretical.
Ukraine President Volodimir Zelinski said that Ukraine will implement these agreements immediately.
However, Olexi of Skyeton, the company that develops Raybird, suspects that Moscow will adhere to the ceasefire.
“(The Russians pierce you in your face, then the next day they agree, but they ask to tie your hands. So the possibility of continuing to fight residue,” Ocsy explains.
However, this deal will also bring relief to Russia.
It is estimated that this year alone, Ukraine carried out more than 30 attacks on oil infrastructure in Russia using drones and other weapons.
They recently achieved some of the country's largest oil facilities, such as the UFA oil refinery, about 1500 km (932 miles) from the confrontation station and the TUPSE factory in the Krasnodar area.
Russia's oil refining capacity decreased by 10 % as a result of drone attacks, according to Reuters.
Moscow's latest decision to extend the ban on oil exports show that they feel pain.
Ukraine's arsenal to carry out deep strikes only grow. President Zelensky recently announced that Ukrainian engineers designed a drone more than 3000 km (1860 miles). This means that it can reach not only Moscow, but even the sites in Siberia.

Kyiv also claims that she has developed a “energy -running rocket”. It flies very quickly and thus is difficult to intercept.
Zelensky said that Ukraine has successfully tested the first locally made and made weapon and Cruise Neptune missiles to strike maritime targets as well as maritime targets. According to this missile, this missile was used to attack the Russian air base in the southern city of Engels last week, although Ukrainian officials did not confirm or deny these reports.
The ceasefire deal is definitely good news for Ukraine as well. Russia was unabated, power stations and stations throughout the country. At one point last year, the power generation capacity in Ukraine decreased to a third of the pre -war level.
Last month, when temperatures decreased below zero, Russian drone planes hit the thermal energy station in Micoleev, southern Ukraine. A few days later, another huge air attack left more than 250,000 Odessa residents without strength and heating.
Recently, there have been an increasing number of attacks on gas infrastructure in Ukraine. Among the regular targets are underground gas storage facilities in western Ukraine and production facilities in the middle and eastern parts of the country.

Artem Petrenko, Executive Director of the Association of Gas Producers in Ukraine says that Moscow's goal is to reduce gas production in Ukraine, which is the key to energy security in the country.
At the end of March, the gas storage facilities in Ukraine were full of only about 4 %, According to one monitoring group.
And if Russia continues its strikes, filling these storage facilities will be very difficult, which may lead to tremendous problems next winter.
Again on the test ground, after several rolls, Raybird opens umbrellas and successfully descends in this field.
Octie is satisfied with the results. He says that although it is good to stop the shooting, they are still unable to stop their work and develop new weapons.
“Our enemy just wants to get a break, collect his strength and attack again,” he says. “We must be ready for that.”