Stocks exposed to Russia and Ukraine, such as Coca-Cola, rose strongly after a ceasefire was agreed between the two nations. The ceasefire will come into effect on Sunday and involves the withdrawal of heavy weapons from conflict areas.Mining group Rio Tinto gained as it pledged to return nearly $6bn to shareholders in respect of 2014 after hiking its full-year dividend by 12% and announcing a $2bn share buyback. Other miners such as Glencore and Anglo American were also performing well.Stocks exposed to Russia and Ukraine, such as Coca-Cola, rose strongly after a ceasefire was agreed between the two nations. The ceasefire will come into effect on Sunday and involves the withdrawal of heavy weapons from conflict areas.Drugmaker Shire was trading higher after 2015 got off to a strong start on the back of the company's biggest purchase to date and the approval of the first drug to treat binge-eating disorder. The Ireland-based firm posted fourth quarter earnings of $2.63 (£1.71) per share, just short of analysts' expectations, while revenue rose 19% to $1.58bn, above consensus estimate of $1.55bn.Despite currency headwinds and the loss of exclusivity on hyperactivity drug Intuniv, Flemming Ornskov, the group chief executive, said he expected further growth in 2015 after what he described as an "exceptional 2014".Reckitt Benckiser was boosted by full year results featuring better-than-expected revenue, margins and earnings, with a strong outlook statement. Credit Suisse raised their price target on the stock, from 5,400p to 5,900p and analyst Charlie Mills said: "Value in the sector is increasingly a "relative game" and we prefer to stick with a company that grows in the developed market, is well invested, has best in class cost managers and has balance sheet optionality. Reckitt ticks all those boxes."The oil and gas sector was lower despite a bounce in crude prices, with heavyweight Shell going ex-dividend.Sage Group was also among the fallers after going ex-dividend.RisersCoca-Cola HBC AG (CDI) (CCH) 1,170.00p +7.24%Anglo American (AAL) 1,160.00p +3.25%Intertek Group (ITRK) 2,527.00p +3.23%Rio Tinto (RIO) 3,066.00p +3.18%Hargreaves Lansdown (HL.) 994.50p +2.74%Shire Plc (SHP) 4,902.00p +2.64%Burberry Group (BRBY) 1,869.00p +2.64%Glencore (GLEN) 277.95p +2.30%Royal Bank of Scotland Group (RBS) 387.00p +2.27%Antofagasta (ANTO) 704.00p +1.96%FallersRoyal Dutch Shell 'B' (RDSB) 2,197.00p -2.12%Royal Dutch Shell 'A' (RDSA) 2,110.50p -1.68%United Utilities Group (UU.) 970.00p -1.62%GlaxoSmithKline (GSK) 1,490.00p -1.59%Sage Group (SGE) 473.80p -1.54%Compass Group (CPG) 1,119.00p -1.50%Reckitt Benckiser Group (RB.) 5,690.00p -1.47%Unilever (ULVR) 2,784.00p -1.24%Diageo (DGE) 1,862.50p -1.17%Centrica (CNA) 287.70p -1.07%