Brazil expects Putin-Lula talks to pave way for more exports to Russia -- diplomat / Russia's top diplomat to discuss boosting ties in trade, tourism in Dominican Republic / Russia-US dialogue should not be taken as sensation -- Russia's top diplomat / Don't get too high or too low about talks with US, Russian diplomat says / Russian diplomats face escalating pressure in Britain, ambassador says / Russian diplomats stay in Istanbul after talks with US to prepare final document -- source / PREVIEW: Top Russian diplomat to meet with counterparts from Sahel Trio / Senior Russian diplomat briefs CIS, CSTO envoys on Moscow-Washington exchanges / Russian, US diplomats to meet in Istanbul on Feb 27 to discuss embassies' work -- Lavrov / Quite a lot of contacts between Russia, US now -- senior Russian diplomat