Accusations of Chinese hacking are a US power play, experts say

Washington has launched a war of words over cybersecurity against China before President Xi Jinping's US trip next month, a move that analysts say attempts to set the agenda for the state visit and put pressure on Beijing.

During a CBS Evening News television interview on Tuesday, US Secretary of State John Kerry accused China and Russia of "very likely" reading his e-mails.

Cyberattacks have been a topic of ongoing discussions with China and will be so again when US President Barack Obama hosts Xi in Washington in September, the top US diplomat said.