Following the last military clash with Israel in 2021, Sinwar spoke of "more than 500 kilometers of tunnels.”

Source: https://www.spiegel.de/international/world/a-gaza-conundrum-the-story-behind-the-rise-of-hamas-a-d9e30bb6-2295-45a1-825c-dbd0c43c3613

“Hamas used the cease-fire to prepare for this battle,” he said, adding that Sinwar and the others identified as top tier by Israel hail from the place that “could soon be described as Hamas’ last stand.”

Source: https://www.samfordcrimson.com/israels-most-wanted-butcher-of-khan-younis-other-hamas-terrorists-now-in-idfs-sights-2023-12-17.html

HonestReporting posted a photo of Eslaiah being kissed by Hamas leader Yehia Sinwar.

Source: https://www.kelownadailycourier.ca/entertainment/national_entertainment/article_f3246cfc-e6b2-5e33-9773-767920451c52.html

In Gaza, no figure looms larger in determining the future trajectory of the war than Yehya Sinwar.

Source: https://www.newdelhitimes.com/shadowy-hamas-leader-in-gaza-is-at-top-of-israels-hit-list-after-last-months-deadly-attack/

Now, photos have emerged of him posing with Hamas leader Yahya Sinwar.

Source: https://www.dailymail.co.uk/galleries/article-12729961/CNN-fires-freelance-Gaza-photojournalist-ties-Hamas.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Sinwar later became a senior commander in the Ezzedine al-Qassam Brigades, the military wing of Hamas, before taking overall leadership of the movement in Gaza.

Source: https://www.al-monitor.com/originals/2023/11/yahya-sinwar-hamas-gaza-leader-and-dead-man-walking

Yehia Sinwar, Hamas’s Gaza leader, claimed that Operation Guardian of the Walls only succeeded in damaging a of Hamas’s tunnel network beneath Gaza in 2021.

Source: https://foreignpolicy.com/2023/11/13/israel-hamas-war-gaza-idf-palestinians-civilians-hostages-tunnels-human-shields/