A nuclear weapon of low power necessary for the United States to deter Russia, to lower the threshold of use US not suppose, said Deputy head of the Pentagon David Trachtenberg. according to his statement, concern US is the so-called Russian doctrine of "escalation to de-escalation," which provides for limited use of nuclear weapons in a military conflict, using conventional weapons. now in political and expert circles in the US have developed a strong belief that Moscow adheres to this doctrine. Along with this, the official Russian military doctrine involves the use of nuclear weapons only in cases where against it or its allies used weapons of mass destruction, or when the aggression using conventional weapons against Russia threatens the very existence of the country. Trachtenberg added that North America doesn't want to bring " escalating to the highest level ". "We're not doing this in order to lower their own threshold for the use of nuclear (weapons), but in order to increase the threshold in the minds of the enemy or potential enemy," - concluded the representative of the Pentagon. The development and deployment of nuclear warheads of low power provided by the nuclear doctrine of the United States, adopted under President Donald trump. In addition, the United States, as in previous years, do not take and do not presume to take on their own shoulders the obligation not to use first Nuclear weapons, which recently confirmed Trachtenberg. first Deputy head of the Ministry of foreign Affairs of the Russian Federation Alexander Grushko stated that renewed military and nuclear strategy "lowers the threshold for use of nuclear weapons, "because they" blur the very line between scenarios where the use of nuclear weapons is impossible and where the use of nuclear weapons ". last week the 1st Deputy chief of the main operations Directorate of the General staff military power of Russia Victor Pozniki said that North America develop missiles "Tomahawk" nuclear warhead small capacity, their development can be seen as the unwinding of a new arms race. in 2018, the head of Vladimir Putin announced the creation in Russia of new weapons systems, both nuclear and non-nuclear are not. In April of 2019, the head of state said that heavy Intercontinental missile "Sarmat" is the final stage of testing, on alert is supplied hypersonic complex "Dagger" and the laser system Peresvet, are working on a hypersonic missile with Intercontinental range complex "Avangard" with planning a cruise unit. <span style="color:darkgray