Russia will consider the "behaviour" of Western media and attitude to Russian reporters abroad when deciding whether to accredit their journalists for major forums in Russia.
State-owned TASS news agency quoted Kremlin spokesman Dmitry Peskov as saying on Saturday.
Journalists from countries that Russia calls "unfriendly" did not get accreditation for the ongoing St Petersburg International Economic Forum.
Asked whether Moscow will allow Western journalists to attend forums in Russia in the future, Peskov said: "Let's see what the regime will be, how they (foreign media) will behave."
Peskov added that the issue of giving accreditations would also depend on how Russian journalists were treated in "unfriendly" countries. Moscow uses that label for states which imposed sanctions over what the Kremlin calls its "special military operation" in Ukraine.
"Everything will depend on the attitude towards our journalists in foreign - unfriendly - countries," TASS cited a Kremlin spokesman as saying.
"Business as usual will no longer happen. We will be ready to receive them (Western journalists), but we will not tolerate such treatment of our journalists abroad."
The US Central Command said it will begin implementing a blockade of all maritime traffic entering and exiting Iranian ports on April 13 at 10 a.m. ET (1400 GMT), after President Donald Trump said the US Navy would start blockading the Strait of Hormuz.
Hungary's veteran nationalist leader Viktor Orban conceded defeat on Sunday after a landslide election victory by the upstart opposition Tisza party, in a setback for his allies in Russia and US President Donald Trump's White House.
President Donald Trump said on Sunday the US Navy would immediately start blockading the Strait of Hormuz, raising the stakes after marathon talks with Iran failed to reach a deal to end the war, jeopardising a fragile two-week ceasefire.
At least 200 people are feared dead after Nigerian military jets struck a village market while pursuing rebels in the northeast of the country on Saturday night, a councillor for the area and residents said on Sunday.
Russia and Ukraine accused each other on Sunday of breaching the 32-hour ceasefire in their four-year war, reporting more than a thousand drone and shelling attacks just hours after the truce began on Saturday to mark Orthodox Easter.