(Washington France New Dian) The United States believes that Russia intends to fight for a long time in Ukraine and prepare to support Ukraine to fight to the end.However, officials pointed out that the United States must be cautious to formulate strategies and try their best to limit the battlefield to Ukraine to avoid triggering Third World War.

Intellectual information in the United States originally showed that the Ukraine capital Kiev Full fell within a few days.However, the Pentagon quickly realized that the fierce resistance of logistics and Ukraine made it difficult for the Russian army to implement its combat plan as scheduled.

However, the U.S. military believes that Russia will eventually overwhelm Kiev on its military advantage.A senior official of the US Department of Defense said that Moscow's firepower cannot be underestimated.

The primary task of the United States is to continue to provide major aid for Ukraine's resistance.A diplomat explained that Americans have shared strong information and intelligence with Ukraine, mainly in order to allow the air defense system to stop the Russian army in time.

The US $ 350 million (S $ 4770 million) announced in late February in the United States has been implemented rapidly. Poisonous air defense missiles and portable javelin anti -tank missiles have been delivered to the Ukrainian army.The United States emphasized that as long as it does not involve offensive weapons, military assistance is not limited.

What is most worried about in the United States is that once Putin is irritated, the war may spread outside Ukraine, causing Russia's war with the United States and NATO countries.Preventing the expansion of the war is the red line of the United States, and another official bluntly said: We don't want the Third World War.

Washington focuses on preventing and deterrent deployments near Russia's allies to prevent Moscow from calling any NATO's joint warring country.

In view of this, Washington also refused to let Poland use the United States to transfer the Soviet fighter aircraft to Kiev.Washington is worried that this will not necessarily increase Ukraine's air defense forces, but will make the United States and Russia confront.

Civilians' injuries have caused Western countries to face the pressure of increasing intervention, but US leaders are still committed to taking subtle balances.They hope to let Putin understand through sanctions that the cost of continuing the war of aggression is high.