Facebook has dismissed calls for a break-up of the world's biggest social network and other big internet companies, saying this would not tackle issues such as privacy, attempts to influence elections or harmful content.
"Just because it is difficult to regulate the internet doesn't mean policy makers should jump to the alternative of wishing these companies away," Nick Clegg, Facebook's head of global affairs, said in a speech in Berlin.
Facebook, which owns one-time rivals Instagram and WhatsApp and has almost 2.4 billion monthly users, is firmly in the cross-hairs of regulators and faces calls from some government officials for penalties or to be forcibly broken up.
"The internet does need competition and it does need regulation ... we want to work with governments and policymakers to design the sort of smart regulation that fosters competition, encourages innovation and protects consumers," Mr Clegg said.
Last week seven US Senate Democrats asked the Trump administration to disclose details of possible Federal Trade Commission and Justice Department competition investigations into Amazon, Facebook, Alphabet and Apple.
Reuters and other outlets reported the agencies were gearing up to investigate whether the firms misuse their market power.
While it was large in absolute terms, Facebook's share of the global advertising market was still "relatively small", said Mr Clegg.
The former British deputy prime minister was hired to help deal with a global backlash against Facebook over its mishandling of user data and not doing enough to prevent Russian interference in the 2016 US presidential election.
Facebook raised more concerns last week when it said it plans to launch a new global cryptocurrency.
US President Donald Trump has called for closer scrutiny of companies like Facebook and Google, saying they suppress conservative voices online, without presenting any evidence.
Mr Clegg also said in his speech that the West should move fast on new rules or see countries like China and Russia determine the internet's future.
"If the West doesn't engage with this question quickly and emphatically, it may be that it isn't ours to answer. The common rules created in our hemisphere can become the example the rest of the world follows," he said.