U.S. curbs Russian access to foreign fertilizers and valves By Reuters
© Reuters. FILE PHOTO: A tractor sows sunflower seeds and fertilizes the soil with chemicals at “Leninskoye znamya” (Lenin banner) collective farm, about 40 km (25 miles) southwest of Rostov-on-Don, April 25, 2011. REUTERS/Vladimir Konstantinov/File…
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