This cartoon by Peter Brookes from The Times portrays German Chancellor Angela Merkel as Florence Nightingale and Russian President Vladimir Putin as a Russian cavalry officer. Florence Nightingale, was a celebrated British social reformer and statistician, and the founder of modern nursing. She came to prominence while serving as a nurse during the Crimean War, where she tended to wounded soldiers. She was known as "The Lady with the Lamp" after her habit of making rounds at night.
In the first panel of the cartoon Merkel/NIghtingale is ticking Putin off (we can guess it's for invading Crimea). She's holding a lamp labelled 'GAS'. In the second panel, Putin blows out the flame of the lamp. And in the third panel, they are in complete darkness.
Almost 40 percent of the gas used in Germany comes from Russia.The crisis in Ukraine has kindled fears that Russia could stop the flow of gas to the west. That's why Merkel is giving Putin a telling-off rather than taking more robust action. Dave Brown has a similar cartoon in The Independent, in which only Obama stands up to Putin.