On Monday, the Russian Defense Ministry said that alleged Syrian opposition militants had shelled a Russian military hospital killing a combat medic and injuring two others in Aleppo. One of the injured later also succumbed to her wounds, according to the ministry.
"We are convinced that [the attack is a] planned action, planned by those who are trying to preserve their positions in Aleppo, under the shelter of foreign protectors", — Lavrov said during a press conference in Moscow.
The minister also added that Moscow is concerned that Western countries incite Syrian opposition to radical actions.
Earlier in the day, Kremlin spokesman Dmitry Peskov said that Russia regrets that international community, including US, downplayed the attack on Russian hospital in Aleppo.
"It is sad that the Western countries that are proud of their fight for human rights and concern about the humanitarian situation both in Aleppo and in Syria in general, in fact, continue to support radicals and extremists."
According to Lavrov, Russian military will help Damascus to take additional measures to ensure security of hospitals in the region.
Over recent months, Aleppo became major battleground in Syria, engulfed in civil war since 2011, engaging government forces, jihadists, and numerous opposition groups. Eastern Aleppo is currently encircled by government troops, and the fighting has affected thousands of civilians still trapped in the city.