Saint Pierre and Miquelon
none

Saint Vincent and the Grenadines joins other Caribbean states to counter Venezuela's claim that Aves Island sustains human habitation, a criterion under UNCLOS, which permits Venezuela to extend its EEZ/continental shelf over a large portion of the eastern Caribbean Sea

Samoa
none

San Marino
none

Sao Tome and Principe
none

Saudi Arabia
Saudi Arabia has reinforced its concrete-filled
security barrier along sections of the now fully demarcated border
with Yemen to stem illegal cross-border activities; Kuwait and Saudi
Arabia continue discussions on a maritime boundary with Iran

Senegal
The Gambia and Guinea-Bissau attempt to stem separatist
violence, cross border raids, and arms smuggling into their
countries from Senegal's Casamance region, and in 2006, respectively
accepted 6,000 and 10,000 Casamance residents fleeing the conflict;
2,500 Guinea-Bissau residents have fled into Senegal in 2006 to
escape armed confrontations along the border

Serbia
as the final status of the Serbian province of Kosovo
approaches resolution through the six-nation contact group, the
several thousand peacekeepers from the UN Interim Administration
Mission in Kosovo (UNMIK) since 1999, continue to keep the peace
between Kosovar Albanians overwhelmingly supporting Kosovo
independence and the Serb minority in Kosovo and Serbian officials
in Belgrade, who oppose independence for the province; ethnic
Albanians in Kosovo oppose demarcation of the boundary with
Macedonia based on the 2000 Macedonia-Serbia and Montenegro
delimitation agreement; Serbia and Montenegro delimited about half
of the boundary with Bosnia and Herzegovina, but sections with
Serbia along the Drina River remain in dispute

Seychelles
together with Mauritius, Seychelles claims the Chagos
Archipelago (UK-administered British Indian Ocean Territory)

Sierra Leone
domestic fighting among disparate rebel groups,
warlords, and youth gangs in Cote d'Ivoire, Guinea, Liberia, and
Sierra Leone perpetuate insurgencies, street violence, looting, arms
trafficking, ethnic conflicts, and refugees in border areas; UN
Mission in Sierra Leone (UNAMSIL) has maintained over 4,000
peacekeepers in Sierra Leone since 1999; Sierra Leone considers
excessive Guinea's definition of the flood plain limits to define
the left bank boundary of the Makona and Moa rivers and protests
Guinea's continued occupation of these lands, including the hamlet
of Yenga occupied since 1998