Kenya’s government defended the efforts of its security services on Monday despite deadly weekend bombings, saying it has foiled many other plots.

Blasts in Nairobi and Mombasa, seven months after the Westgate shopping mall attack, killed seven people this weekend.

For months many Kenyans have voiced growing anger that militants – believed to be linked to Somalia’s al Qaeda-aligned Al Shabaab group or their sympathizers – have continued to stage sporadic attacks with apparent ease.

“We have disrupted a lot of schemes of the terrorists in our country,” Deputy President William Ruto told journalists in response to questions about public frustration over insecurity.

“The many that we manage to disrupt sometimes are lost when one happens in the country, because that is what people notice.”

There were no immediate claims of responsibility for the weekend attacks, but Somalia’s Al Shabaab said it carried out the Westgate raid in Nairobi in September in which gunmen killed at least 67 people.

Al Shabaab has said that that attack and others it had claimed in Kenya were to demand Kenyan troops withdraw from neighbouring Somalia.

Ruto repeated that his government would not pull its soldiers out of Somalia, saying that would let al Shabaab regroup and create a bigger threat to Kenya.

“We will not relent and we will not withdraw from Somalia,” Ruto said, noting that Kenya would not succumb to “blackmail”.

“We are on top of this situation,” he said of the security response. “What you see are desperate kicks of a dying horse.”

Security worries are hurting Kenya’s tourism industry. Hotels on the popular coast north and south of Mombasa have seen a drop in bookings since Westgate and because of other attacks.

The U.S. Embassy in Nairobi told its citizens after Saturday’s attacks on Mombasa to avoid any travel to the port city “for the time being”.

Western diplomats have privately said Kenyan security forces – which receive aid and training from the United States, Britain and Israel among others – could do more to secure the nation and said rivalries between agencies hampered intelligence work.

In his comments at the news conference, Ruto said different arms of the security services were operating together: “All our security agencies have been working coherently and indivisibly.”