Moscow imposed a total ban on imports of many Western foods on Thursday in retaliation against sanctions over Ukraine, a stronger than expected measure that isolates Russian consumers from world trade to a degree unseen since Soviet days.
In eastern Ukraine, a Dutch recovery team called off its work at the site where Malaysian airliner MH 17 was shot down over rebel held territory last month, saying the frontline location had become too dangerous.
Ukraine said the halt to the recovery meant it would stop observing a ceasefire at the site, where it is battling rebels that the West says are armed and funded by Moscow.
Russian share prices fell after the announcement of Moscow's one year ban on all meat, fish, dairy, fruit and vegetables from the United States, the 28 European Union countries, Canada, Australia and non-EU member Norway.
Russia bought $43 billion worth of food last year. It has become by far the biggest consumer of EU fruit and vegetables, the second biggest buyer of U.S. poultry and a major global consumer of fish, meat and dairy.
President Vladimir Putin ordered his government to adopt the measures to retaliate against Western countries who imposed sanctions on Russia's defense, oil and financial sectors over its support for rebels waging an insurrection in east Ukraine.
He had promised to ensure that the measures would not hurt Russian consumers, which suggested he might exclude some popular products. But in the end, the bans announced by his prime minister, Dmitry Medvedev, mentioned no exceptions.
The announcement saw Russian bond yields rise to their highest levels in years and Moscow's already reeling share prices extend a sell-off.
Agriculture Minister Nikolai Fyodorov acknowledged that the measures would cause a short-term spike in inflation, but said he did not see a danger in the medium or long term. He said Russia would compensate with more imports of products from other suppliers such as Brazilian meat and New Zealand cheese.
The EU's executive Commission said it reserved the right to take action to retaliate against the Russian ban.
Farmers in specific sectors in Western producing countries are likely to suffer, but much of the pain will be borne by Russians, who will face higher prices and shortages of some goods, with inflation already rising, the rouble falling and the economy hurt by capital flight.
"The first casualties would be the domestic market. However it will have some implications for the farmers in the producing countries," Abdolreza Abbassian, a senior economist with the United Nations Food and Agriculture Organization, said.
Russians have relished imported food since the fall of the Soviet Union, when year-round supplies of fresh fruit and vegetables arrived and ubiquitous cheap American frozen chicken quarters became known as "Bush's legs" after the then president.
The nascent middle class in Moscow, which buys Italian cheese and American beef at supermarkets, will take a hit, but so will ordinary people who buy Polish apples and Greek cucumbers in street markets. Russia bought 28 percent of EU fruit exports and 21.5 percent of its vegetables in 2011. It bought 8 percent of U.S. chicken meat exports last year.
Moscow may also ban Western airlines from flying transit routes over its air space, a measure that would cost European airlines money burning extra fuel to avoid Russia on flights to Asia, but would also deprive Moscow of hundreds of millions of dollars in overflight fees.
Western countries imposed initially mild sanctions on Russia after it annexed Ukraine's Crimea peninsula in March, but tightened them after a Malaysian airliner was shot down over pro-Russian rebel-held territory in east Ukraine on July 17.
The latest Western measures limit access by Russian state banks to global capital markets and also block imports of defense and oil industry equipment.
Washington and Brussels say the Malaysian airliner was almost certainly shot down by an advanced anti-aircraft missile system supplied to the rebels by Russia. Moscow denies this.
The disaster galvanized politicians, particularly in Europe, who had previously been reluctant to take strong action against a big trading partner.
Dutch inspectors are trying to examine the site to investigate the cause of the disaster and recover any remains of the personal effects and bodies of the 298 victims of the crash. Their visit has been hampered by fighting in the area, which is near the road linking the two main rebel bastions Donetsk and Luhansk near the Russian frontier.
Kiev said it would lift a ceasefire imposed in the area as long as the Dutch had halted their work. Ukrainian military spokesman Andriy Lysenko said seven more Ukrainian service members had been killed in the past day of fighting.
The rebels are led almost exclusively by Russian citizens and are armed with tanks, artillery and other heavy weapons that Kiev and its Western allies say can only have come from the Russian side of the border.
They have declared independent "people's republics" in two industrial provinces of eastern Ukraine which they call "New Russia" a term Putin applied to all of Ukraine's south and east, where most of the population, though identifying themselves as Ukrainians, speak Russian as a native language.
Despite their advanced weapons, the rebels have steadily lost ground since June, leaving them mainly besieged inside two provincial capitals, along with hundreds of thousands of civilians who fear a full-scale government assault.
Russia has announced military exercises near the border this week. On Wednesday, NATO said Moscow had amassed 20,000 troops near the frontier and could be planning a ground invasion under the pretext of launching a humanitarian mission.
Putin has rallied Russians with relentless nationalist campaigns in state media against Ukraine and in support of the rebel cause, and Western officials fear he might invade to prevent a humiliating rebel defeat.