The prime minister has said she is prepared to rip up human rights laws if they "stop us from" tackling terrorism.
"If our human rights laws get in the way of doing it, we will change the law so we can do it", she added.
"The police and security services must get the resources they need, not 20,000 police cuts".
"The danger is on the eve of an election, politicians will sometimes try and do something that looks good but we all know doesn't do us any good".
"If we start throwing away our adherence to human rights in response to what has happened in the last three months, we are throwing away the values at the heart of the democracy, everything that we say we believe in".
Speaking in London, Khan said over the last seven years the Met had lost 600 million pounds ($775 million) through Conservative government cuts, with a further 400 million pounds ($517 million) in planned cuts to the Met budget. "We all remember the cases in the past", Mr Green said.
"We've had three attacks in three months, we need to review the situation and I think simply parsing some hard questions within 24 hours as "we don't need to ask them any more" is not really taking it as seriously as we should".
Theresa May: UK will change human rights laws
"We have been here before - a kind of nuclear arms race in terror laws".
Mrs May said the authorities needed to be able to do more, including restricting the movements of suspected militants when police had enough evidence to suspect they presented a threat, but not enough to prosecute them. Setting out how she'd spend Britain's clawed-back contributions to the European Union budget as the country leaves the bloc, she said there'd be more money for fast internet connections, funds to commercialize research, and better road and rail services as part of a 23 billion-pound ($29.7 billion) package.
"In these three attacks I think it's very important, and we owe it to everyone who has been so seriously affected to take seriously the real problems, which are: Is there an evidence gap?"
Labour leader Jeremy Corbyn hit out at the reduction in funding to the police overseen by May during her six years in the Home Office.
Nations can opt out of obligations "to secure certain rights and freedoms under the Convention" in a "temporary, limited and supervised manner" when embroiled in emergency situation, according to a factsheet published by the ECHR today. "Human rights are there to protect all in society - that is just pure common sense".
The planned measures appear to be an attempt at strengthening the Terrorism Prevention and Investigation Measures (TPIMs).
May could also attempt to increase the period for which terror suspects can be held without trial, now 14 days - a move that provoked clashes with civil liberties campaigners when Tony Blair attempted it after the 7 July 2005 attacks.
"When we reduced it to 14 days, we actually allowed for legislation to enable it to be at 28 days. And it's very easy to say, 'We need more police on the street because that might have stopped some of these things, ' but - really - would it?"
Japan's military begins major drill with US carriers watching North Korea
In total, about 300 Tomahawks have their sights trained on North Korea's nuclear test sites and underground facilities. The joint training comes after North Korea successfully carried out three ballistic missile tests in a month.