Who is the next leader of World?

After US. china.Russa or Germany

This question is now raising in the world forum that after US, Who is next leader.President Donald Trump's pursuit of an "America first'' foreign policy is raising questions about who, if anyone, will fill the void if the US relinquishes its traditional global leadership role. China and Russia are among the aspirants for greater economic and military influence, while an ambivalent Germany could emerge as the West's moral compass.
For generations, the US has largely set the terms for the global economy, policed international security threats and spearheaded the response to crises like Ebola and Haiti's earthquake. But after sweeping into office with an isolationist-tinged message rooted in the idea the US needs to refocus on itself, Trump has said and done little to dispel the notion that he wants the rest of the world solve its own problems.
n his inaugural address, Trump said the US for too long has been invested in other countries' industries, militaries, borders and infrastructure while letting its own fall into ``disrepair and decay.''``That is the past,'' Trump said.In one of his first acts, Trump on Monday formally withdrew the US from the Trans-Pacific Partnership, a project launched under President George W. Bush and negotiated by President Barack Obama to set trade rules with Asia and counter China's growing economic influence.
rump said he was doing a ``great thing'' for US workers by tearing it up. But Sen. John McCain, a fellow Republican, said the withdrawal ``abdicates US leadership in Asia to China.''China isn't the only country that could profit from US retrenchment. In their own ways, Russia and Germany also could stake a claim to a greater global role. But no one can simultaneously match America's economic, military and moral might, and a more isolationist US could mean a power vacuum. ``There's no country or collection of countries that can do what the US has done for the last half-century,'' said Jon Alterman, a former State Department official now at the Center for Strategic and International Studies. ``It's partly a question of resources and capacity, and it's partly a question of ambition.''
``A huge number of things will simply not be done,'' he said.
While US rivals like China and Russia would relish the opportunity to try to replace the United States, many countries in Asia, Europe and elsewhere are fretting the prospect of an American retreat. Even Germany is unsettled about being increasingly looked to as a moral example.China, which has been investing billions in Africa and Latin America to curry influence in the developing world, could become an increasingly dominant economic power. It already is aggressively pursuing a multicountry trade deal that would appear the likeliest alternative to TPP, a scenario Obama's administration had warned would let China ``write the rules'' and lead to worse labor and environmental standards.
Beijing has used Trump's inauguration as an opportunity to ridicule America's democracy and tout its own communist system as superior. And many of China's neighbors share its fears about Trump's threats to trigger a ``trade war'' with the Asian powerhouse by taxing Chinese products.``Whether you like it or not, the global economy is the big ocean that you cannot escape from,'' Chinese President Xi Jinping said last week at the World Economic Forum in Davos, Switzerland, laying out his plans for growth, overseas investments and expanded trade opportunities. It was the type of agenda the US might have previously touted.