If Mossad boss David Barnea and Shin Bet chief Ronen Bar succeed they could stop an Iran revenge attack on Israel for the killing last month of Hamas chief Ismail Haniyeh in Tehran.
But if Iran launches strikes against Israel, through its proxies or worse, it could trigger a major regional war in the Middle East.
The spy chiefs were joined by Maj Gen Nitzan Alon and PM Netanyahu's adviser Ophir Falk - but observers here in Israel and beyond fear this is just gesture politics.
One non-Israeli intelligence source told the Mirror: "Many believe this is purely for show and the Israeli delegation has no mandate to deliver. There is now a serious rift between the US, Egypt and Qatar interlocutors."
According to sources, the only way the Israeli delegation can succeed in pulling off a deal is if Israeli Prime Minister Benjamin Netanyahu bows to pressure from the US to relax certain red lines.
As the delegation talked, the number of Palestinians killed in the Gaza war topped 40,000, 1.7% of the population. Some 60% of buildings are damaged or totally destroyed.
Cross-border missile exchanges continued between the Israeli Defence Force and Lebanese Hezbollah, and Israel is bracing for Iran's long-anticipated attack.
This is the biggest crisis Israel and the wider region has faced in a generation and tensions appear to be heading for a major escalation.
Tel Aviv was quiet yesterday and the usual tourist crowds were absent, with many locals considering their future in Israel.
Some told us they want to leave because of the October 7 Hamas attacks, which killed 1,200, took 250 hostages and sparked war in Gaza.
هذه القصة مأخوذة من طبعة August 16, 2024 من Daily Mirror UK.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة August 16, 2024 من Daily Mirror UK.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
NORTHERN LIGHTS
O'Neill's wonder boys ready to shine on world stage says Shea
KNOCKED FOR SIX
Emotional Rory equals Seve record and admits: I've been through a lot so to finish '24 like this is a dream,
GREAT BRITISH BRAKE OFF
Emma and Katie too hot for champions Canada
GAT TO HURT
A record 11th consecutive defeat for Wales and coach Warren has no idea on future
WE BELIEVE IN STEVE
Itoje and Steward jump to defence of Borthwick after England suffer a fifth successive loss
TROLLS POSTING FAKE LIAM FUNERAL VIDEOS
Bogus clips flooding TikTok
Jude's defender
England ace hirés minder
ONE SHOW'S LAUREN GETS BACK TO WORK
Presenter, 46, returns to BBC after her cancer diagnosis
Biden OKs Ukraine long-range strikes
US missiles can hit targets in Russia
TRUMP'S LOST HIS SPARKLER
He misses out in bid to buy £1.6m orange diamond